20953380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7127}}^1$

素因数の和:7153

約数の個数: 72

約数和(自身を含む): 68257728

約数和(自身を除く): 47304348

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, 7127, 14254, 21381, 28508, 35635, 42762, 49889, 71270, 85524, 99778, 106905, 142540, 149667, 199556, 213810, 249445, 299334, 349223, 427620, 498890, 598668, 698446, 748335, 997780, 1047669, 1396892, 1496670, 1746115, 2095338, 2993340, 3492230, 4190676, 5238345, 6984460, 10476690, 20953380]

約数ペア:

[(1, 20953380), (2, 10476690), (3, 6984460), (4, 5238345), (5, 4190676), (6, 3492230), (7, 2993340), (10, 2095338), (12, 1746115), (14, 1496670), (15, 1396892), (20, 1047669), (21, 997780), (28, 748335), (30, 698446), (35, 598668), (42, 498890), (49, 427620), (60, 349223), (70, 299334), (84, 249445), (98, 213810), (105, 199556), (140, 149667), (147, 142540), (196, 106905), (210, 99778), (245, 85524), (294, 71270), (420, 49889), (490, 42762), (588, 35635), (735, 28508), (980, 21381), (1470, 14254), (2940, 7127)]