72781120

素因数分解:

$2^6\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2879}}^1$

素因数の和:2975

約数の個数: 56

約数和(自身を含む): 175564800

約数和(自身を除く): 102783680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 158, 160, 316, 320, 395, 632, 790, 1264, 1580, 2528, 2879, 3160, 5056, 5758, 6320, 11516, 12640, 14395, 23032, 25280, 28790, 46064, 57580, 92128, 115160, 184256, 227441, 230320, 454882, 460640, 909764, 921280, 1137205, 1819528, 2274410, 3639056, 4548820, 7278112, 9097640, 14556224, 18195280, 36390560, 72781120]

約数ペア:

[(1, 72781120), (2, 36390560), (4, 18195280), (5, 14556224), (8, 9097640), (10, 7278112), (16, 4548820), (20, 3639056), (32, 2274410), (40, 1819528), (64, 1137205), (79, 921280), (80, 909764), (158, 460640), (160, 454882), (316, 230320), (320, 227441), (395, 184256), (632, 115160), (790, 92128), (1264, 57580), (1580, 46064), (2528, 28790), (2879, 25280), (3160, 23032), (5056, 14395), (5758, 12640), (6320, 11516)]