81880028

素因数分解:

$2^2\times {\mathrm{97}}^1\times {\mathrm{281}}^1\times {\mathrm{751}}^1$

素因数の和:1133

約数の個数: 24

約数和(自身を含む): 145475904

約数和(自身を除く): 63595876

約数列:

[1, 2, 4, 97, 194, 281, 388, 562, 751, 1124, 1502, 3004, 27257, 54514, 72847, 109028, 145694, 211031, 291388, 422062, 844124, 20470007, 40940014, 81880028]

約数ペア:

[(1, 81880028), (2, 40940014), (4, 20470007), (97, 844124), (194, 422062), (281, 291388), (388, 211031), (562, 145694), (751, 109028), (1124, 72847), (1502, 54514), (3004, 27257)]