90019880

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{23201}}^1$

素因数の和:23309

約数の個数: 32

約数和(自身を含む): 204641640

約数和(自身を除く): 114621760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 23201, 46402, 92804, 116005, 185608, 232010, 464020, 928040, 2250497, 4500994, 9001988, 11252485, 18003976, 22504970, 45009940, 90019880]

約数ペア:

[(1, 90019880), (2, 45009940), (4, 22504970), (5, 18003976), (8, 11252485), (10, 9001988), (20, 4500994), (40, 2250497), (97, 928040), (194, 464020), (388, 232010), (485, 185608), (776, 116005), (970, 92804), (1940, 46402), (3880, 23201)]