39889220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4013}}^1$

素因数の和:4100

約数の個数: 48

約数和(自身を含む): 97106688

約数和(自身を除く): 57217468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4013, 4970, 8026, 9940, 16052, 20065, 28091, 40130, 56182, 80260, 112364, 140455, 280910, 284923, 561820, 569846, 1139692, 1424615, 1994461, 2849230, 3988922, 5698460, 7977844, 9972305, 19944610, 39889220]

約数ペア:

[(1, 39889220), (2, 19944610), (4, 9972305), (5, 7977844), (7, 5698460), (10, 3988922), (14, 2849230), (20, 1994461), (28, 1424615), (35, 1139692), (70, 569846), (71, 561820), (140, 284923), (142, 280910), (284, 140455), (355, 112364), (497, 80260), (710, 56182), (994, 40130), (1420, 28091), (1988, 20065), (2485, 16052), (4013, 9940), (4970, 8026)]