257307960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23563}}^1$

素因数の和:23597

約数の個数: 128

約数和(自身を含む): 950100480

約数和(自身を除く): 692792520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2730, 3640, 5460, 10920, 23563, 47126, 70689, 94252, 117815, 141378, 164941, 188504, 235630, 282756, 306319, 329882, 353445, 471260, 494823, 565512, 612638, 659764, 706890, 824705, 918957, 942520, 989646, 1225276, 1319528, 1413780, 1531595, 1649410, 1837914, 1979292, 2144233, 2450552, 2474115, 2827560, 3063190, 3298820, 3675828, 3958584, 4288466, 4594785, 4948230, 6126380, 6432699, 6597640, 7351656, 8576932, 9189570, 9896460, 10721165, 12252760, 12865398, 17153864, 18379140, 19792920, 21442330, 25730796, 32163495, 36758280, 42884660, 51461592, 64326990, 85769320, 128653980, 257307960]

約数ペア:

[(1, 257307960), (2, 128653980), (3, 85769320), (4, 64326990), (5, 51461592), (6, 42884660), (7, 36758280), (8, 32163495), (10, 25730796), (12, 21442330), (13, 19792920), (14, 18379140), (15, 17153864), (20, 12865398), (21, 12252760), (24, 10721165), (26, 9896460), (28, 9189570), (30, 8576932), (35, 7351656), (39, 6597640), (40, 6432699), (42, 6126380), (52, 4948230), (56, 4594785), (60, 4288466), (65, 3958584), (70, 3675828), (78, 3298820), (84, 3063190), (91, 2827560), (104, 2474115), (105, 2450552), (120, 2144233), (130, 1979292), (140, 1837914), (156, 1649410), (168, 1531595), (182, 1413780), (195, 1319528), (210, 1225276), (260, 989646), (273, 942520), (280, 918957), (312, 824705), (364, 706890), (390, 659764), (420, 612638), (455, 565512), (520, 494823), (546, 471260), (728, 353445), (780, 329882), (840, 306319), (910, 282756), (1092, 235630), (1365, 188504), (1560, 164941), (1820, 141378), (2184, 117815), (2730, 94252), (3640, 70689), (5460, 47126), (10920, 23563)]