19503080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:123

約数の個数: 128

約数和(自身を含む): 51321600

約数和(自身を除く): 31818520

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 29, 34, 40, 43, 46, 58, 68, 85, 86, 92, 115, 116, 136, 145, 170, 172, 184, 215, 230, 232, 290, 340, 344, 391, 430, 460, 493, 580, 667, 680, 731, 782, 860, 920, 986, 989, 1160, 1247, 1334, 1462, 1564, 1720, 1955, 1972, 1978, 2465, 2494, 2668, 2924, 3128, 3335, 3655, 3910, 3944, 3956, 4930, 4945, 4988, 5336, 5848, 6235, 6670, 7310, 7820, 7912, 9860, 9890, 9976, 11339, 12470, 13340, 14620, 15640, 16813, 19720, 19780, 21199, 22678, 24940, 26680, 28681, 29240, 33626, 39560, 42398, 45356, 49880, 56695, 57362, 67252, 84065, 84796, 90712, 105995, 113390, 114724, 134504, 143405, 168130, 169592, 211990, 226780, 229448, 286810, 336260, 423980, 453560, 487577, 573620, 672520, 847960, 975154, 1147240, 1950308, 2437885, 3900616, 4875770, 9751540, 19503080]

約数ペア:

[(1, 19503080), (2, 9751540), (4, 4875770), (5, 3900616), (8, 2437885), (10, 1950308), (17, 1147240), (20, 975154), (23, 847960), (29, 672520), (34, 573620), (40, 487577), (43, 453560), (46, 423980), (58, 336260), (68, 286810), (85, 229448), (86, 226780), (92, 211990), (115, 169592), (116, 168130), (136, 143405), (145, 134504), (170, 114724), (172, 113390), (184, 105995), (215, 90712), (230, 84796), (232, 84065), (290, 67252), (340, 57362), (344, 56695), (391, 49880), (430, 45356), (460, 42398), (493, 39560), (580, 33626), (667, 29240), (680, 28681), (731, 26680), (782, 24940), (860, 22678), (920, 21199), (986, 19780), (989, 19720), (1160, 16813), (1247, 15640), (1334, 14620), (1462, 13340), (1564, 12470), (1720, 11339), (1955, 9976), (1972, 9890), (1978, 9860), (2465, 7912), (2494, 7820), (2668, 7310), (2924, 6670), (3128, 6235), (3335, 5848), (3655, 5336), (3910, 4988), (3944, 4945), (3956, 4930)]