81919760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{347}}^1$

素因数の和:600

約数の個数: 80

約数和(自身を含む): 206611776

約数和(自身を除く): 124692016

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 227, 260, 347, 454, 520, 694, 908, 1040, 1135, 1388, 1735, 1816, 2270, 2776, 2951, 3470, 3632, 4511, 4540, 5552, 5902, 6940, 9022, 9080, 11804, 13880, 14755, 18044, 18160, 22555, 23608, 27760, 29510, 36088, 45110, 47216, 59020, 72176, 78769, 90220, 118040, 157538, 180440, 236080, 315076, 360880, 393845, 630152, 787690, 1023997, 1260304, 1575380, 2047994, 3150760, 4095988, 5119985, 6301520, 8191976, 10239970, 16383952, 20479940, 40959880, 81919760]

約数ペア:

[(1, 81919760), (2, 40959880), (4, 20479940), (5, 16383952), (8, 10239970), (10, 8191976), (13, 6301520), (16, 5119985), (20, 4095988), (26, 3150760), (40, 2047994), (52, 1575380), (65, 1260304), (80, 1023997), (104, 787690), (130, 630152), (208, 393845), (227, 360880), (260, 315076), (347, 236080), (454, 180440), (520, 157538), (694, 118040), (908, 90220), (1040, 78769), (1135, 72176), (1388, 59020), (1735, 47216), (1816, 45110), (2270, 36088), (2776, 29510), (2951, 27760), (3470, 23608), (3632, 22555), (4511, 18160), (4540, 18044), (5552, 14755), (5902, 13880), (6940, 11804), (9022, 9080)]