21167684740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{839}}^1\times {\mathrm{40693}}^1$

素因数の和:41572

約数の個数: 48

約数和(自身を含む): 45941898240

約数和(自身を除く): 24774213500

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 839, 1678, 3356, 4195, 8390, 16780, 26009, 40693, 52018, 81386, 104036, 130045, 162772, 203465, 260090, 406930, 520180, 813860, 1261483, 2522966, 5045932, 6307415, 12614830, 25229660, 34141427, 68282854, 136565708, 170707135, 341414270, 682828540, 1058384237, 2116768474, 4233536948, 5291921185, 10583842370, 21167684740]

約数ペア:

[(1, 21167684740), (2, 10583842370), (4, 5291921185), (5, 4233536948), (10, 2116768474), (20, 1058384237), (31, 682828540), (62, 341414270), (124, 170707135), (155, 136565708), (310, 68282854), (620, 34141427), (839, 25229660), (1678, 12614830), (3356, 6307415), (4195, 5045932), (8390, 2522966), (16780, 1261483), (26009, 813860), (40693, 520180), (52018, 406930), (81386, 260090), (104036, 203465), (130045, 162772)]