21302421

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{191}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 33619968

約数和(自身を除く): 12317547

約数列:

[1, 3, 7, 21, 47, 113, 141, 191, 329, 339, 573, 791, 987, 1337, 2373, 4011, 5311, 8977, 15933, 21583, 26931, 37177, 62839, 64749, 111531, 151081, 188517, 453243, 1014401, 3043203, 7100807, 21302421]

約数ペア:

[(1, 21302421), (3, 7100807), (7, 3043203), (21, 1014401), (47, 453243), (113, 188517), (141, 151081), (191, 111531), (329, 64749), (339, 62839), (573, 37177), (791, 26931), (987, 21583), (1337, 15933), (2373, 8977), (4011, 5311)]