128212140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{305267}}^1$

素因数の和:305286

約数の個数: 48

約数和(自身を含む): 410280192

約数和(自身を除く): 282068052

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, 305267, 610534, 915801, 1221068, 1526335, 1831602, 2136869, 3052670, 3663204, 4273738, 4579005, 6105340, 6410607, 8547476, 9158010, 10684345, 12821214, 18316020, 21368690, 25642428, 32053035, 42737380, 64106070, 128212140]

約数ペア:

[(1, 128212140), (2, 64106070), (3, 42737380), (4, 32053035), (5, 25642428), (6, 21368690), (7, 18316020), (10, 12821214), (12, 10684345), (14, 9158010), (15, 8547476), (20, 6410607), (21, 6105340), (28, 4579005), (30, 4273738), (35, 3663204), (42, 3052670), (60, 2136869), (70, 1831602), (84, 1526335), (105, 1221068), (140, 915801), (210, 610534), (420, 305267)]