81865560

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{97459}}^1$

素因数の和:97480

約数の個数: 64

約数和(自身を含む): 280684800

約数和(自身を除く): 198819240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 97459, 194918, 292377, 389836, 487295, 584754, 682213, 779672, 974590, 1169508, 1364426, 1461885, 1949180, 2046639, 2339016, 2728852, 2923770, 3411065, 3898360, 4093278, 5457704, 5847540, 6822130, 8186556, 10233195, 11695080, 13644260, 16373112, 20466390, 27288520, 40932780, 81865560]

約数ペア:

[(1, 81865560), (2, 40932780), (3, 27288520), (4, 20466390), (5, 16373112), (6, 13644260), (7, 11695080), (8, 10233195), (10, 8186556), (12, 6822130), (14, 5847540), (15, 5457704), (20, 4093278), (21, 3898360), (24, 3411065), (28, 2923770), (30, 2728852), (35, 2339016), (40, 2046639), (42, 1949180), (56, 1461885), (60, 1364426), (70, 1169508), (84, 974590), (105, 779672), (120, 682213), (140, 584754), (168, 487295), (210, 389836), (280, 292377), (420, 194918), (840, 97459)]