21780696

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{18521}}^1$

素因数の和:18544

約数の個数: 48

約数和(自身を含む): 63345240

約数和(自身を除く): 41564544

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 49, 56, 84, 98, 147, 168, 196, 294, 392, 588, 1176, 18521, 37042, 55563, 74084, 111126, 129647, 148168, 222252, 259294, 388941, 444504, 518588, 777882, 907529, 1037176, 1555764, 1815058, 2722587, 3111528, 3630116, 5445174, 7260232, 10890348, 21780696]

約数ペア:

[(1, 21780696), (2, 10890348), (3, 7260232), (4, 5445174), (6, 3630116), (7, 3111528), (8, 2722587), (12, 1815058), (14, 1555764), (21, 1037176), (24, 907529), (28, 777882), (42, 518588), (49, 444504), (56, 388941), (84, 259294), (98, 222252), (147, 148168), (168, 129647), (196, 111126), (294, 74084), (392, 55563), (588, 37042), (1176, 18521)]