21666944

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{449}}^1$

素因数の和:505

約数の個数: 64

約数和(自身を含む): 48195000

約数和(自身を除く): 26528056

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 52, 58, 64, 104, 116, 128, 208, 232, 377, 416, 449, 464, 754, 832, 898, 928, 1508, 1664, 1796, 1856, 3016, 3592, 3712, 5837, 6032, 7184, 11674, 12064, 13021, 14368, 23348, 24128, 26042, 28736, 46696, 48256, 52084, 57472, 93392, 104168, 169273, 186784, 208336, 338546, 373568, 416672, 677092, 747136, 833344, 1354184, 1666688, 2708368, 5416736, 10833472, 21666944]

約数ペア:

[(1, 21666944), (2, 10833472), (4, 5416736), (8, 2708368), (13, 1666688), (16, 1354184), (26, 833344), (29, 747136), (32, 677092), (52, 416672), (58, 373568), (64, 338546), (104, 208336), (116, 186784), (128, 169273), (208, 104168), (232, 93392), (377, 57472), (416, 52084), (449, 48256), (464, 46696), (754, 28736), (832, 26042), (898, 24128), (928, 23348), (1508, 14368), (1664, 13021), (1796, 12064), (1856, 11674), (3016, 7184), (3592, 6032), (3712, 5837)]