890686520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{2861}}^1$

素因数の和:3096

約数の個数: 64

約数和(自身を含む): 2062700640

約数和(自身を除く): 1172014120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 181, 215, 344, 362, 430, 724, 860, 905, 1448, 1720, 1810, 2861, 3620, 5722, 7240, 7783, 11444, 14305, 15566, 22888, 28610, 31132, 38915, 57220, 62264, 77830, 114440, 123023, 155660, 246046, 311320, 492092, 517841, 615115, 984184, 1035682, 1230230, 2071364, 2460460, 2589205, 4142728, 4920920, 5178410, 10356820, 20713640, 22267163, 44534326, 89068652, 111335815, 178137304, 222671630, 445343260, 890686520]

約数ペア:

[(1, 890686520), (2, 445343260), (4, 222671630), (5, 178137304), (8, 111335815), (10, 89068652), (20, 44534326), (40, 22267163), (43, 20713640), (86, 10356820), (172, 5178410), (181, 4920920), (215, 4142728), (344, 2589205), (362, 2460460), (430, 2071364), (724, 1230230), (860, 1035682), (905, 984184), (1448, 615115), (1720, 517841), (1810, 492092), (2861, 311320), (3620, 246046), (5722, 155660), (7240, 123023), (7783, 114440), (11444, 77830), (14305, 62264), (15566, 57220), (22888, 38915), (28610, 31132)]