81254720

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8191}}^1$

素因数の和:8239

約数の個数: 56

約数和(自身を含む): 199753728

約数和(自身を除く): 118499008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 8191, 9920, 16382, 32764, 40955, 65528, 81910, 131056, 163820, 253921, 262112, 327640, 507842, 524224, 655280, 1015684, 1269605, 1310560, 2031368, 2539210, 2621120, 4062736, 5078420, 8125472, 10156840, 16250944, 20313680, 40627360, 81254720]

約数ペア:

[(1, 81254720), (2, 40627360), (4, 20313680), (5, 16250944), (8, 10156840), (10, 8125472), (16, 5078420), (20, 4062736), (31, 2621120), (32, 2539210), (40, 2031368), (62, 1310560), (64, 1269605), (80, 1015684), (124, 655280), (155, 524224), (160, 507842), (248, 327640), (310, 262112), (320, 253921), (496, 163820), (620, 131056), (992, 81910), (1240, 65528), (1984, 40955), (2480, 32764), (4960, 16382), (8191, 9920)]