28404180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{22543}}^1$

素因数の和:22565

約数の個数: 72

約数和(自身を含む): 98472192

約数和(自身を除く): 70068012

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 22543, 45086, 67629, 90172, 112715, 135258, 157801, 202887, 225430, 270516, 315602, 338145, 405774, 450860, 473403, 631204, 676290, 789005, 811548, 946806, 1014435, 1352580, 1420209, 1578010, 1893612, 2028870, 2367015, 2840418, 3156020, 4057740, 4734030, 5680836, 7101045, 9468060, 14202090, 28404180]

約数ペア:

[(1, 28404180), (2, 14202090), (3, 9468060), (4, 7101045), (5, 5680836), (6, 4734030), (7, 4057740), (9, 3156020), (10, 2840418), (12, 2367015), (14, 2028870), (15, 1893612), (18, 1578010), (20, 1420209), (21, 1352580), (28, 1014435), (30, 946806), (35, 811548), (36, 789005), (42, 676290), (45, 631204), (60, 473403), (63, 450860), (70, 405774), (84, 338145), (90, 315602), (105, 270516), (126, 225430), (140, 202887), (180, 157801), (210, 135258), (252, 112715), (315, 90172), (420, 67629), (630, 45086), (1260, 22543)]