21406364

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 44330496

約数和(自身を除く): 22924132

約数列:

[1, 2, 4, 7, 14, 28, 61, 83, 122, 151, 166, 244, 302, 332, 427, 581, 604, 854, 1057, 1162, 1708, 2114, 2324, 4228, 5063, 9211, 10126, 12533, 18422, 20252, 25066, 35441, 36844, 50132, 64477, 70882, 87731, 128954, 141764, 175462, 257908, 350924, 764513, 1529026, 3058052, 5351591, 10703182, 21406364]

約数ペア:

[(1, 21406364), (2, 10703182), (4, 5351591), (7, 3058052), (14, 1529026), (28, 764513), (61, 350924), (83, 257908), (122, 175462), (151, 141764), (166, 128954), (244, 87731), (302, 70882), (332, 64477), (427, 50132), (581, 36844), (604, 35441), (854, 25066), (1057, 20252), (1162, 18422), (1708, 12533), (2114, 10126), (2324, 9211), (4228, 5063)]