25780020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{61381}}^1$

素因数の和:61400

約数の個数: 48

約数和(自身を含む): 82497408

約数和(自身を除く): 56717388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 61381, 122762, 184143, 245524, 306905, 368286, 429667, 613810, 736572, 859334, 920715, 1227620, 1289001, 1718668, 1841430, 2148335, 2578002, 3682860, 4296670, 5156004, 6445005, 8593340, 12890010, 25780020]

約数ペア:

[(1, 25780020), (2, 12890010), (3, 8593340), (4, 6445005), (5, 5156004), (6, 4296670), (7, 3682860), (10, 2578002), (12, 2148335), (14, 1841430), (15, 1718668), (20, 1289001), (21, 1227620), (28, 920715), (30, 859334), (35, 736572), (42, 613810), (60, 429667), (70, 368286), (84, 306905), (105, 245524), (140, 184143), (210, 122762), (420, 61381)]