21272216

素因数分解:

$2^3\times 7^1\times {\mathrm{101}}^1\times {\mathrm{3761}}^1$

素因数の和:3875

約数の個数: 32

約数和(自身を含む): 46046880

約数和(自身を除く): 24774664

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 101, 202, 404, 707, 808, 1414, 2828, 3761, 5656, 7522, 15044, 26327, 30088, 52654, 105308, 210616, 379861, 759722, 1519444, 2659027, 3038888, 5318054, 10636108, 21272216]

約数ペア:

[(1, 21272216), (2, 10636108), (4, 5318054), (7, 3038888), (8, 2659027), (14, 1519444), (28, 759722), (56, 379861), (101, 210616), (202, 105308), (404, 52654), (707, 30088), (808, 26327), (1414, 15044), (2828, 7522), (3761, 5656)]