20178880040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{619}}^1\times {\mathrm{1723}}^1$

素因数の和:2407

約数の個数: 128

約数和(自身を含む): 50793177600

約数和(自身を除く): 30614297560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 619, 860, 946, 1238, 1720, 1723, 1892, 2365, 2476, 3095, 3446, 3784, 4730, 4952, 6190, 6809, 6892, 8615, 9460, 12380, 13618, 13784, 17230, 18920, 18953, 24760, 26617, 27236, 34045, 34460, 37906, 53234, 54472, 68090, 68920, 74089, 75812, 94765, 106468, 133085, 136180, 148178, 151624, 189530, 212936, 266170, 272360, 292787, 296356, 370445, 379060, 532340, 585574, 592712, 740890, 758120, 814979, 1064680, 1066537, 1171148, 1463935, 1481780, 1629958, 2133074, 2342296, 2927870, 2963560, 3259916, 4074895, 4266148, 5332685, 5855740, 6519832, 8149790, 8532296, 10665370, 11711480, 11731907, 16299580, 21330740, 23463814, 32599160, 42661480, 45861091, 46927628, 58659535, 91722182, 93855256, 117319070, 183444364, 229305455, 234638140, 366888728, 458610910, 469276280, 504472001, 917221820, 1008944002, 1834443640, 2017888004, 2522360005, 4035776008, 5044720010, 10089440020, 20178880040]

約数ペア:

[(1, 20178880040), (2, 10089440020), (4, 5044720010), (5, 4035776008), (8, 2522360005), (10, 2017888004), (11, 1834443640), (20, 1008944002), (22, 917221820), (40, 504472001), (43, 469276280), (44, 458610910), (55, 366888728), (86, 234638140), (88, 229305455), (110, 183444364), (172, 117319070), (215, 93855256), (220, 91722182), (344, 58659535), (430, 46927628), (440, 45861091), (473, 42661480), (619, 32599160), (860, 23463814), (946, 21330740), (1238, 16299580), (1720, 11731907), (1723, 11711480), (1892, 10665370), (2365, 8532296), (2476, 8149790), (3095, 6519832), (3446, 5855740), (3784, 5332685), (4730, 4266148), (4952, 4074895), (6190, 3259916), (6809, 2963560), (6892, 2927870), (8615, 2342296), (9460, 2133074), (12380, 1629958), (13618, 1481780), (13784, 1463935), (17230, 1171148), (18920, 1066537), (18953, 1064680), (24760, 814979), (26617, 758120), (27236, 740890), (34045, 592712), (34460, 585574), (37906, 532340), (53234, 379060), (54472, 370445), (68090, 296356), (68920, 292787), (74089, 272360), (75812, 266170), (94765, 212936), (106468, 189530), (133085, 151624), (136180, 148178)]