81278240

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5237}}^1$

素因数の和:5349

約数の個数: 48

約数和(自身を含む): 194036472

約数和(自身を除く): 112758232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1552, 1940, 3104, 3880, 5237, 7760, 10474, 15520, 20948, 26185, 41896, 52370, 83792, 104740, 167584, 209480, 418960, 507989, 837920, 1015978, 2031956, 2539945, 4063912, 5079890, 8127824, 10159780, 16255648, 20319560, 40639120, 81278240]

約数ペア:

[(1, 81278240), (2, 40639120), (4, 20319560), (5, 16255648), (8, 10159780), (10, 8127824), (16, 5079890), (20, 4063912), (32, 2539945), (40, 2031956), (80, 1015978), (97, 837920), (160, 507989), (194, 418960), (388, 209480), (485, 167584), (776, 104740), (970, 83792), (1552, 52370), (1940, 41896), (3104, 26185), (3880, 20948), (5237, 15520), (7760, 10474)]