20149878040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^2\times {\mathrm{299671}}^1$

素因数の和:299764

約数の個数: 48

約数和(自身を含む): 46470137040

約数和(自身を除く): 26320259000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 1681, 3362, 6724, 8405, 13448, 16810, 33620, 67240, 299671, 599342, 1198684, 1498355, 2397368, 2996710, 5993420, 11986840, 12286511, 24573022, 49146044, 61432555, 98292088, 122865110, 245730220, 491460440, 503746951, 1007493902, 2014987804, 2518734755, 4029975608, 5037469510, 10074939020, 20149878040]

約数ペア:

[(1, 20149878040), (2, 10074939020), (4, 5037469510), (5, 4029975608), (8, 2518734755), (10, 2014987804), (20, 1007493902), (40, 503746951), (41, 491460440), (82, 245730220), (164, 122865110), (205, 98292088), (328, 61432555), (410, 49146044), (820, 24573022), (1640, 12286511), (1681, 11986840), (3362, 5993420), (6724, 2996710), (8405, 2397368), (13448, 1498355), (16810, 1198684), (33620, 599342), (67240, 299671)]