640469760

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{23827}}^1$

素因数の和:23858

約数の個数: 144

約数和(自身を含む): 2337812736

約数和(自身を除く): 1697342976

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 768, 840, 896, 960, 1120, 1280, 1344, 1680, 1792, 1920, 2240, 2688, 3360, 3840, 4480, 5376, 6720, 8960, 13440, 23827, 26880, 47654, 71481, 95308, 119135, 142962, 166789, 190616, 238270, 285924, 333578, 357405, 381232, 476540, 500367, 571848, 667156, 714810, 762464, 833945, 953080, 1000734, 1143696, 1334312, 1429620, 1524928, 1667890, 1906160, 2001468, 2287392, 2501835, 2668624, 2859240, 3049856, 3335780, 3812320, 4002936, 4574784, 5003670, 5337248, 5718480, 6099712, 6671560, 7624640, 8005872, 9149568, 10007340, 10674496, 11436960, 13343120, 15249280, 16011744, 18299136, 20014680, 21348992, 22873920, 26686240, 30498560, 32023488, 40029360, 42697984, 45747840, 53372480, 64046976, 80058720, 91495680, 106744960, 128093952, 160117440, 213489920, 320234880, 640469760]

約数ペア:

[(1, 640469760), (2, 320234880), (3, 213489920), (4, 160117440), (5, 128093952), (6, 106744960), (7, 91495680), (8, 80058720), (10, 64046976), (12, 53372480), (14, 45747840), (15, 42697984), (16, 40029360), (20, 32023488), (21, 30498560), (24, 26686240), (28, 22873920), (30, 21348992), (32, 20014680), (35, 18299136), (40, 16011744), (42, 15249280), (48, 13343120), (56, 11436960), (60, 10674496), (64, 10007340), (70, 9149568), (80, 8005872), (84, 7624640), (96, 6671560), (105, 6099712), (112, 5718480), (120, 5337248), (128, 5003670), (140, 4574784), (160, 4002936), (168, 3812320), (192, 3335780), (210, 3049856), (224, 2859240), (240, 2668624), (256, 2501835), (280, 2287392), (320, 2001468), (336, 1906160), (384, 1667890), (420, 1524928), (448, 1429620), (480, 1334312), (560, 1143696), (640, 1000734), (672, 953080), (768, 833945), (840, 762464), (896, 714810), (960, 667156), (1120, 571848), (1280, 500367), (1344, 476540), (1680, 381232), (1792, 357405), (1920, 333578), (2240, 285924), (2688, 238270), (3360, 190616), (3840, 166789), (4480, 142962), (5376, 119135), (6720, 95308), (8960, 71481), (13440, 47654), (23827, 26880)]