40239920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{397}}^1$

素因数の和:598

約数の個数: 80

約数和(自身を含む): 107784768

約数和(自身を除く): 67544848

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 181, 280, 362, 397, 560, 724, 794, 905, 1267, 1448, 1588, 1810, 1985, 2534, 2779, 2896, 3176, 3620, 3970, 5068, 5558, 6335, 6352, 7240, 7940, 10136, 11116, 12670, 13895, 14480, 15880, 20272, 22232, 25340, 27790, 31760, 44464, 50680, 55580, 71857, 101360, 111160, 143714, 222320, 287428, 359285, 502999, 574856, 718570, 1005998, 1149712, 1437140, 2011996, 2514995, 2874280, 4023992, 5029990, 5748560, 8047984, 10059980, 20119960, 40239920]

約数ペア:

[(1, 40239920), (2, 20119960), (4, 10059980), (5, 8047984), (7, 5748560), (8, 5029990), (10, 4023992), (14, 2874280), (16, 2514995), (20, 2011996), (28, 1437140), (35, 1149712), (40, 1005998), (56, 718570), (70, 574856), (80, 502999), (112, 359285), (140, 287428), (181, 222320), (280, 143714), (362, 111160), (397, 101360), (560, 71857), (724, 55580), (794, 50680), (905, 44464), (1267, 31760), (1448, 27790), (1588, 25340), (1810, 22232), (1985, 20272), (2534, 15880), (2779, 14480), (2896, 13895), (3176, 12670), (3620, 11116), (3970, 10136), (5068, 7940), (5558, 7240), (6335, 6352)]