21395444

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 45534720

約数和(自身を除く): 24139276

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 131, 133, 262, 266, 307, 524, 532, 614, 917, 1228, 1834, 2149, 2489, 3668, 4298, 4978, 5833, 8596, 9956, 11666, 17423, 23332, 34846, 40217, 40831, 69692, 80434, 81662, 160868, 163324, 281519, 563038, 764123, 1126076, 1528246, 3056492, 5348861, 10697722, 21395444]

約数ペア:

[(1, 21395444), (2, 10697722), (4, 5348861), (7, 3056492), (14, 1528246), (19, 1126076), (28, 764123), (38, 563038), (76, 281519), (131, 163324), (133, 160868), (262, 81662), (266, 80434), (307, 69692), (524, 40831), (532, 40217), (614, 34846), (917, 23332), (1228, 17423), (1834, 11666), (2149, 9956), (2489, 8596), (3668, 5833), (4298, 4978)]