279527620

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1$

素因数の和:509

約数の個数: 96

約数和(自身を含む): 649958400

約数和(自身を除く): 370430780

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 61, 62, 76, 95, 122, 124, 155, 190, 244, 305, 310, 380, 389, 589, 610, 620, 778, 1159, 1178, 1220, 1556, 1891, 1945, 2318, 2356, 2945, 3782, 3890, 4636, 5795, 5890, 7391, 7564, 7780, 9455, 11590, 11780, 12059, 14782, 18910, 23180, 23729, 24118, 29564, 35929, 36955, 37820, 47458, 48236, 60295, 71858, 73910, 94916, 118645, 120590, 143716, 147820, 179645, 229121, 237290, 241180, 359290, 450851, 458242, 474580, 718580, 735599, 901702, 916484, 1145605, 1471198, 1803404, 2254255, 2291210, 2942396, 3677995, 4508510, 4582420, 7355990, 9017020, 13976381, 14711980, 27952762, 55905524, 69881905, 139763810, 279527620]

約数ペア:

[(1, 279527620), (2, 139763810), (4, 69881905), (5, 55905524), (10, 27952762), (19, 14711980), (20, 13976381), (31, 9017020), (38, 7355990), (61, 4582420), (62, 4508510), (76, 3677995), (95, 2942396), (122, 2291210), (124, 2254255), (155, 1803404), (190, 1471198), (244, 1145605), (305, 916484), (310, 901702), (380, 735599), (389, 718580), (589, 474580), (610, 458242), (620, 450851), (778, 359290), (1159, 241180), (1178, 237290), (1220, 229121), (1556, 179645), (1891, 147820), (1945, 143716), (2318, 120590), (2356, 118645), (2945, 94916), (3782, 73910), (3890, 71858), (4636, 60295), (5795, 48236), (5890, 47458), (7391, 37820), (7564, 36955), (7780, 35929), (9455, 29564), (11590, 24118), (11780, 23729), (12059, 23180), (14782, 18910)]