21363472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{379}}^1$

素因数の和:671

約数の個数: 40

約数和(自身を含む): 44858240

約数和(自身を除く): 23494768

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 271, 379, 542, 758, 1084, 1516, 2168, 3032, 3523, 4336, 4927, 6064, 7046, 9854, 14092, 19708, 28184, 39416, 56368, 78832, 102709, 205418, 410836, 821672, 1335217, 1643344, 2670434, 5340868, 10681736, 21363472]

約数ペア:

[(1, 21363472), (2, 10681736), (4, 5340868), (8, 2670434), (13, 1643344), (16, 1335217), (26, 821672), (52, 410836), (104, 205418), (208, 102709), (271, 78832), (379, 56368), (542, 39416), (758, 28184), (1084, 19708), (1516, 14092), (2168, 9854), (3032, 7046), (3523, 6064), (4336, 4927)]