20921152016

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{295363}}^1$

素因数の和:295623

約数の個数: 40

約数和(自身を含む): 42851409120

約数和(自身を除く): 21930257104

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 233, 304, 466, 932, 1864, 3728, 4427, 8854, 17708, 35416, 70832, 295363, 590726, 1181452, 2362904, 4725808, 5611897, 11223794, 22447588, 44895176, 68819579, 89790352, 137639158, 275278316, 550556632, 1101113264, 1307572001, 2615144002, 5230288004, 10460576008, 20921152016]

約数ペア:

[(1, 20921152016), (2, 10460576008), (4, 5230288004), (8, 2615144002), (16, 1307572001), (19, 1101113264), (38, 550556632), (76, 275278316), (152, 137639158), (233, 89790352), (304, 68819579), (466, 44895176), (932, 22447588), (1864, 11223794), (3728, 5611897), (4427, 4725808), (8854, 2362904), (17708, 1181452), (35416, 590726), (70832, 295363)]