21318648

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{68329}}^1$

素因数の和:68351

約数の個数: 32

約数和(自身を含む): 57397200

約数和(自身を除く): 36078552

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 68329, 136658, 204987, 273316, 409974, 546632, 819948, 888277, 1639896, 1776554, 2664831, 3553108, 5329662, 7106216, 10659324, 21318648]

約数ペア:

[(1, 21318648), (2, 10659324), (3, 7106216), (4, 5329662), (6, 3553108), (8, 2664831), (12, 1776554), (13, 1639896), (24, 888277), (26, 819948), (39, 546632), (52, 409974), (78, 273316), (104, 204987), (156, 136658), (312, 68329)]