21691568

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{433}}^1$

素因数の和:573

約数の個数: 40

約数和(自身を含む): 43913856

約数和(自身を除く): 22222288

約数列:

[1, 2, 4, 8, 16, 31, 62, 101, 124, 202, 248, 404, 433, 496, 808, 866, 1616, 1732, 3131, 3464, 6262, 6928, 12524, 13423, 25048, 26846, 43733, 50096, 53692, 87466, 107384, 174932, 214768, 349864, 699728, 1355723, 2711446, 5422892, 10845784, 21691568]

約数ペア:

[(1, 21691568), (2, 10845784), (4, 5422892), (8, 2711446), (16, 1355723), (31, 699728), (62, 349864), (101, 214768), (124, 174932), (202, 107384), (248, 87466), (404, 53692), (433, 50096), (496, 43733), (808, 26846), (866, 25048), (1616, 13423), (1732, 12524), (3131, 6928), (3464, 6262)]