638695680

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{23761}}^1$

素因数の和:23792

約数の個数: 144

約数和(自身を含む): 2331337344

約数和(自身を除く): 1692641664

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, 23761, 26880, 47522, 71283, 95044, 118805, 142566, 166327, 190088, 237610, 285132, 332654, 356415, 380176, 475220, 498981, 570264, 665308, 712830, 760352, 831635, 950440, 997962, 1140528, 1330616, 1425660, 1520704, 1663270, 1900880, 1995924, 2281056, 2494905, 2661232, 2851320, 3041408, 3326540, 3801760, 3991848, 4562112, 4989810, 5322464, 5702640, 6082816, 6653080, 7603520, 7983696, 9124224, 9979620, 10644928, 11405280, 13306160, 15207040, 15967392, 18248448, 19959240, 21289856, 22810560, 26612320, 30414080, 31934784, 39918480, 42579712, 45621120, 53224640, 63869568, 79836960, 91242240, 106449280, 127739136, 159673920, 212898560, 319347840, 638695680]

約数ペア:

[(1, 638695680), (2, 319347840), (3, 212898560), (4, 159673920), (5, 127739136), (6, 106449280), (7, 91242240), (8, 79836960), (10, 63869568), (12, 53224640), (14, 45621120), (15, 42579712), (16, 39918480), (20, 31934784), (21, 30414080), (24, 26612320), (28, 22810560), (30, 21289856), (32, 19959240), (35, 18248448), (40, 15967392), (42, 15207040), (48, 13306160), (56, 11405280), (60, 10644928), (64, 9979620), (70, 9124224), (80, 7983696), (84, 7603520), (96, 6653080), (105, 6082816), (112, 5702640), (120, 5322464), (128, 4989810), (140, 4562112), (160, 3991848), (168, 3801760), (192, 3326540), (210, 3041408), (224, 2851320), (240, 2661232), (256, 2494905), (280, 2281056), (320, 1995924), (336, 1900880), (384, 1663270), (420, 1520704), (448, 1425660), (480, 1330616), (560, 1140528), (640, 997962), (672, 950440), (768, 831635), (840, 760352), (896, 712830), (960, 665308), (1120, 570264), (1280, 498981), (1344, 475220), (1680, 380176), (1792, 356415), (1920, 332654), (2240, 285132), (2688, 237610), (3360, 190088), (3840, 166327), (4480, 142566), (5376, 118805), (6720, 95044), (8960, 71283), (13440, 47522), (23761, 26880)]