21499240

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{1567}}^1$

素因数の和:1599

約数の個数: 64

約数和(自身を含む): 56448000

約数和(自身を除く): 34948760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1567, 1715, 1960, 2744, 3134, 3430, 6268, 6860, 7835, 10969, 12536, 13720, 15670, 21938, 31340, 43876, 54845, 62680, 76783, 87752, 109690, 153566, 219380, 307132, 383915, 438760, 537481, 614264, 767830, 1074962, 1535660, 2149924, 2687405, 3071320, 4299848, 5374810, 10749620, 21499240]

約数ペア:

[(1, 21499240), (2, 10749620), (4, 5374810), (5, 4299848), (7, 3071320), (8, 2687405), (10, 2149924), (14, 1535660), (20, 1074962), (28, 767830), (35, 614264), (40, 537481), (49, 438760), (56, 383915), (70, 307132), (98, 219380), (140, 153566), (196, 109690), (245, 87752), (280, 76783), (343, 62680), (392, 54845), (490, 43876), (686, 31340), (980, 21938), (1372, 15670), (1567, 13720), (1715, 12536), (1960, 10969), (2744, 7835), (3134, 6860), (3430, 6268)]