254865660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{86689}}^1$

素因数の和:86715

約数の個数: 72

約数和(自身を含む): 830143440

約数和(自身を除く): 575277780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 86689, 173378, 260067, 346756, 433445, 520134, 606823, 866890, 1040268, 1213646, 1300335, 1733780, 1820469, 2427292, 2600670, 3034115, 3640938, 4247761, 5201340, 6068230, 7281876, 8495522, 9102345, 12136460, 12743283, 16991044, 18204690, 21238805, 25486566, 36409380, 42477610, 50973132, 63716415, 84955220, 127432830, 254865660]

約数ペア:

[(1, 254865660), (2, 127432830), (3, 84955220), (4, 63716415), (5, 50973132), (6, 42477610), (7, 36409380), (10, 25486566), (12, 21238805), (14, 18204690), (15, 16991044), (20, 12743283), (21, 12136460), (28, 9102345), (30, 8495522), (35, 7281876), (42, 6068230), (49, 5201340), (60, 4247761), (70, 3640938), (84, 3034115), (98, 2600670), (105, 2427292), (140, 1820469), (147, 1733780), (196, 1300335), (210, 1213646), (245, 1040268), (294, 866890), (420, 606823), (490, 520134), (588, 433445), (735, 346756), (980, 260067), (1470, 173378), (2940, 86689)]