21771784

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{151}}^1\times {\mathrm{269}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 41860800

約数和(自身を除く): 20089016

約数列:

[1, 2, 4, 8, 67, 134, 151, 268, 269, 302, 536, 538, 604, 1076, 1208, 2152, 10117, 18023, 20234, 36046, 40468, 40619, 72092, 80936, 81238, 144184, 162476, 324952, 2721473, 5442946, 10885892, 21771784]

約数ペア:

[(1, 21771784), (2, 10885892), (4, 5442946), (8, 2721473), (67, 324952), (134, 162476), (151, 144184), (268, 81238), (269, 80936), (302, 72092), (536, 40619), (538, 40468), (604, 36046), (1076, 20234), (1208, 18023), (2152, 10117)]