21521984

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1609}}^1$

素因数の和:1651

約数の個数: 56

約数和(自身を含む): 49072800

約数和(自身を除く): 27550816

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 32, 38, 44, 64, 76, 88, 152, 176, 209, 304, 352, 418, 608, 704, 836, 1216, 1609, 1672, 3218, 3344, 6436, 6688, 12872, 13376, 17699, 25744, 30571, 35398, 51488, 61142, 70796, 102976, 122284, 141592, 244568, 283184, 336281, 489136, 566368, 672562, 978272, 1132736, 1345124, 1956544, 2690248, 5380496, 10760992, 21521984]

約数ペア:

[(1, 21521984), (2, 10760992), (4, 5380496), (8, 2690248), (11, 1956544), (16, 1345124), (19, 1132736), (22, 978272), (32, 672562), (38, 566368), (44, 489136), (64, 336281), (76, 283184), (88, 244568), (152, 141592), (176, 122284), (209, 102976), (304, 70796), (352, 61142), (418, 51488), (608, 35398), (704, 30571), (836, 25744), (1216, 17699), (1609, 13376), (1672, 12872), (3218, 6688), (3344, 6436)]