8840367620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{889373}}^1$

素因数の和:889460

約数の個数: 48

約数和(自身を含む): 21515735808

約数和(自身を除く): 12675368188

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, 889373, 1778746, 3557492, 4446865, 6225611, 8893730, 12451222, 17787460, 24902444, 31128055, 62256110, 63145483, 124512220, 126290966, 252581932, 315727415, 442018381, 631454830, 884036762, 1262909660, 1768073524, 2210091905, 4420183810, 8840367620]

約数ペア:

[(1, 8840367620), (2, 4420183810), (4, 2210091905), (5, 1768073524), (7, 1262909660), (10, 884036762), (14, 631454830), (20, 442018381), (28, 315727415), (35, 252581932), (70, 126290966), (71, 124512220), (140, 63145483), (142, 62256110), (284, 31128055), (355, 24902444), (497, 17787460), (710, 12451222), (994, 8893730), (1420, 6225611), (1988, 4446865), (2485, 3557492), (4970, 1778746), (9940, 889373)]