291570020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{29333}}^1$

素因数の和:29420

約数の個数: 48

約数和(自身を含む): 709648128

約数和(自身を除く): 418078108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 29333, 58666, 117332, 146665, 205331, 293330, 410662, 586660, 821324, 1026655, 2053310, 2082643, 4106620, 4165286, 8330572, 10413215, 14578501, 20826430, 29157002, 41652860, 58314004, 72892505, 145785010, 291570020]

約数ペア:

[(1, 291570020), (2, 145785010), (4, 72892505), (5, 58314004), (7, 41652860), (10, 29157002), (14, 20826430), (20, 14578501), (28, 10413215), (35, 8330572), (70, 4165286), (71, 4106620), (140, 2082643), (142, 2053310), (284, 1026655), (355, 821324), (497, 586660), (710, 410662), (994, 293330), (1420, 205331), (1988, 146665), (2485, 117332), (4970, 58666), (9940, 29333)]