1999660520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{521}}^1$

素因数の和:628

約数の個数: 192

約数和(自身を含む): 5423559120

約数和(自身を除く): 3423898600

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 61, 65, 88, 104, 110, 121, 122, 130, 143, 220, 242, 244, 260, 286, 305, 440, 484, 488, 520, 521, 572, 605, 610, 671, 715, 793, 968, 1042, 1144, 1210, 1220, 1342, 1430, 1573, 1586, 2084, 2420, 2440, 2605, 2684, 2860, 3146, 3172, 3355, 3965, 4168, 4840, 5210, 5368, 5720, 5731, 6292, 6344, 6710, 6773, 7381, 7865, 7930, 8723, 10420, 11462, 12584, 13420, 13546, 14762, 15730, 15860, 17446, 20840, 22924, 26840, 27092, 28655, 29524, 31460, 31720, 31781, 33865, 34892, 36905, 43615, 45848, 54184, 57310, 59048, 62920, 63041, 63562, 67730, 69784, 73810, 74503, 87230, 95953, 114620, 126082, 127124, 135460, 147620, 149006, 158905, 174460, 191906, 229240, 252164, 254248, 270920, 295240, 298012, 315205, 317810, 348920, 349591, 372515, 383812, 413153, 479765, 504328, 596024, 630410, 635620, 699182, 745030, 767624, 819533, 826306, 959530, 1260820, 1271240, 1398364, 1490060, 1639066, 1652612, 1747955, 1919060, 2065765, 2521640, 2796728, 2980120, 3278132, 3305224, 3495910, 3838120, 3845501, 4097665, 4131530, 4544683, 6556264, 6991820, 7691002, 8195330, 8263060, 9089366, 13983640, 15382004, 16390660, 16526120, 18178732, 19227505, 22723415, 30764008, 32781320, 36357464, 38455010, 45446830, 49991513, 76910020, 90893660, 99983026, 153820040, 181787320, 199966052, 249957565, 399932104, 499915130, 999830260, 1999660520]

約数ペア:

[(1, 1999660520), (2, 999830260), (4, 499915130), (5, 399932104), (8, 249957565), (10, 199966052), (11, 181787320), (13, 153820040), (20, 99983026), (22, 90893660), (26, 76910020), (40, 49991513), (44, 45446830), (52, 38455010), (55, 36357464), (61, 32781320), (65, 30764008), (88, 22723415), (104, 19227505), (110, 18178732), (121, 16526120), (122, 16390660), (130, 15382004), (143, 13983640), (220, 9089366), (242, 8263060), (244, 8195330), (260, 7691002), (286, 6991820), (305, 6556264), (440, 4544683), (484, 4131530), (488, 4097665), (520, 3845501), (521, 3838120), (572, 3495910), (605, 3305224), (610, 3278132), (671, 2980120), (715, 2796728), (793, 2521640), (968, 2065765), (1042, 1919060), (1144, 1747955), (1210, 1652612), (1220, 1639066), (1342, 1490060), (1430, 1398364), (1573, 1271240), (1586, 1260820), (2084, 959530), (2420, 826306), (2440, 819533), (2605, 767624), (2684, 745030), (2860, 699182), (3146, 635620), (3172, 630410), (3355, 596024), (3965, 504328), (4168, 479765), (4840, 413153), (5210, 383812), (5368, 372515), (5720, 349591), (5731, 348920), (6292, 317810), (6344, 315205), (6710, 298012), (6773, 295240), (7381, 270920), (7865, 254248), (7930, 252164), (8723, 229240), (10420, 191906), (11462, 174460), (12584, 158905), (13420, 149006), (13546, 147620), (14762, 135460), (15730, 127124), (15860, 126082), (17446, 114620), (20840, 95953), (22924, 87230), (26840, 74503), (27092, 73810), (28655, 69784), (29524, 67730), (31460, 63562), (31720, 63041), (31781, 62920), (33865, 59048), (34892, 57310), (36905, 54184), (43615, 45848)]