21729050

素因数分解:

$2^1\times 5^2\times 7^4\times {\mathrm{181}}^1$

素因数の和:221

約数の個数: 60

約数和(自身を含む): 47409726

約数和(自身を除く): 25680676

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 175, 181, 245, 343, 350, 362, 490, 686, 905, 1225, 1267, 1715, 1810, 2401, 2450, 2534, 3430, 4525, 4802, 6335, 8575, 8869, 9050, 12005, 12670, 17150, 17738, 24010, 31675, 44345, 60025, 62083, 63350, 88690, 120050, 124166, 221725, 310415, 434581, 443450, 620830, 869162, 1552075, 2172905, 3104150, 4345810, 10864525, 21729050]

約数ペア:

[(1, 21729050), (2, 10864525), (5, 4345810), (7, 3104150), (10, 2172905), (14, 1552075), (25, 869162), (35, 620830), (49, 443450), (50, 434581), (70, 310415), (98, 221725), (175, 124166), (181, 120050), (245, 88690), (343, 63350), (350, 62083), (362, 60025), (490, 44345), (686, 31675), (905, 24010), (1225, 17738), (1267, 17150), (1715, 12670), (1810, 12005), (2401, 9050), (2450, 8869), (2534, 8575), (3430, 6335), (4525, 4802)]