21322808

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{487}}^1$

素因数の和:927

約数の個数: 32

約数和(自身を含む): 43246560

約数和(自身を除く): 21923752

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 421, 487, 842, 974, 1684, 1948, 3368, 3896, 5473, 6331, 10946, 12662, 21892, 25324, 43784, 50648, 205027, 410054, 820108, 1640216, 2665351, 5330702, 10661404, 21322808]

約数ペア:

[(1, 21322808), (2, 10661404), (4, 5330702), (8, 2665351), (13, 1640216), (26, 820108), (52, 410054), (104, 205027), (421, 50648), (487, 43784), (842, 25324), (974, 21892), (1684, 12662), (1948, 10946), (3368, 6331), (3896, 5473)]