257541960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8689}}^1$

素因数の和:8735

約数の個数: 128

約数和(自身を含む): 875952000

約数和(自身を除く): 618410040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 19, 20, 24, 26, 30, 38, 39, 40, 52, 57, 60, 65, 76, 78, 95, 104, 114, 120, 130, 152, 156, 190, 195, 228, 247, 260, 285, 312, 380, 390, 456, 494, 520, 570, 741, 760, 780, 988, 1140, 1235, 1482, 1560, 1976, 2280, 2470, 2964, 3705, 4940, 5928, 7410, 8689, 9880, 14820, 17378, 26067, 29640, 34756, 43445, 52134, 69512, 86890, 104268, 112957, 130335, 165091, 173780, 208536, 225914, 260670, 330182, 338871, 347560, 451828, 495273, 521340, 564785, 660364, 677742, 825455, 903656, 990546, 1042680, 1129570, 1320728, 1355484, 1650910, 1694355, 1981092, 2146183, 2259140, 2476365, 2710968, 3301820, 3388710, 3962184, 4292366, 4518280, 4952730, 6438549, 6603640, 6777420, 8584732, 9905460, 10730915, 12877098, 13554840, 17169464, 19810920, 21461830, 25754196, 32192745, 42923660, 51508392, 64385490, 85847320, 128770980, 257541960]

約数ペア:

[(1, 257541960), (2, 128770980), (3, 85847320), (4, 64385490), (5, 51508392), (6, 42923660), (8, 32192745), (10, 25754196), (12, 21461830), (13, 19810920), (15, 17169464), (19, 13554840), (20, 12877098), (24, 10730915), (26, 9905460), (30, 8584732), (38, 6777420), (39, 6603640), (40, 6438549), (52, 4952730), (57, 4518280), (60, 4292366), (65, 3962184), (76, 3388710), (78, 3301820), (95, 2710968), (104, 2476365), (114, 2259140), (120, 2146183), (130, 1981092), (152, 1694355), (156, 1650910), (190, 1355484), (195, 1320728), (228, 1129570), (247, 1042680), (260, 990546), (285, 903656), (312, 825455), (380, 677742), (390, 660364), (456, 564785), (494, 521340), (520, 495273), (570, 451828), (741, 347560), (760, 338871), (780, 330182), (988, 260670), (1140, 225914), (1235, 208536), (1482, 173780), (1560, 165091), (1976, 130335), (2280, 112957), (2470, 104268), (2964, 86890), (3705, 69512), (4940, 52134), (5928, 43445), (7410, 34756), (8689, 29640), (9880, 26067), (14820, 17378)]