21317856

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{31723}}^1$

素因数の和:31743

約数の個数: 48

約数和(自身を含む): 63955584

約数和(自身を除く): 42637728

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672, 31723, 63446, 95169, 126892, 190338, 222061, 253784, 380676, 444122, 507568, 666183, 761352, 888244, 1015136, 1332366, 1522704, 1776488, 2664732, 3045408, 3552976, 5329464, 7105952, 10658928, 21317856]

約数ペア:

[(1, 21317856), (2, 10658928), (3, 7105952), (4, 5329464), (6, 3552976), (7, 3045408), (8, 2664732), (12, 1776488), (14, 1522704), (16, 1332366), (21, 1015136), (24, 888244), (28, 761352), (32, 666183), (42, 507568), (48, 444122), (56, 380676), (84, 253784), (96, 222061), (112, 190338), (168, 126892), (224, 95169), (336, 63446), (672, 31723)]