78388720

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{23899}}^1$

素因数の和:23953

約数の個数: 40

約数和(自身を含む): 186706800

約数和(自身を除く): 108318080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 23899, 47798, 95596, 119495, 191192, 238990, 382384, 477980, 955960, 979859, 1911920, 1959718, 3919436, 4899295, 7838872, 9798590, 15677744, 19597180, 39194360, 78388720]

約数ペア:

[(1, 78388720), (2, 39194360), (4, 19597180), (5, 15677744), (8, 9798590), (10, 7838872), (16, 4899295), (20, 3919436), (40, 1959718), (41, 1911920), (80, 979859), (82, 955960), (164, 477980), (205, 382384), (328, 238990), (410, 191192), (656, 119495), (820, 95596), (1640, 47798), (3280, 23899)]