91071920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{12791}}^1$

素因数の和:12893

約数の個数: 40

約数和(自身を含む): 214138080

約数和(自身を除く): 123066160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 12791, 25582, 51164, 63955, 102328, 127910, 204656, 255820, 511640, 1023280, 1138399, 2276798, 4553596, 5691995, 9107192, 11383990, 18214384, 22767980, 45535960, 91071920]

約数ペア:

[(1, 91071920), (2, 45535960), (4, 22767980), (5, 18214384), (8, 11383990), (10, 9107192), (16, 5691995), (20, 4553596), (40, 2276798), (80, 1138399), (89, 1023280), (178, 511640), (356, 255820), (445, 204656), (712, 127910), (890, 102328), (1424, 63955), (1780, 51164), (3560, 25582), (7120, 12791)]