21785500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1$

素因数の和:280

約数の個数: 96

約数和(自身を含む): 55194048

約数和(自身を除く): 33408548

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 34, 44, 50, 55, 68, 85, 100, 110, 125, 170, 187, 220, 233, 250, 275, 340, 374, 425, 466, 500, 550, 748, 850, 932, 935, 1100, 1165, 1375, 1700, 1870, 2125, 2330, 2563, 2750, 3740, 3961, 4250, 4660, 4675, 5126, 5500, 5825, 7922, 8500, 9350, 10252, 11650, 12815, 15844, 18700, 19805, 23300, 23375, 25630, 29125, 39610, 43571, 46750, 51260, 58250, 64075, 79220, 87142, 93500, 99025, 116500, 128150, 174284, 198050, 217855, 256300, 320375, 396100, 435710, 495125, 640750, 871420, 990250, 1089275, 1281500, 1980500, 2178550, 4357100, 5446375, 10892750, 21785500]

約数ペア:

[(1, 21785500), (2, 10892750), (4, 5446375), (5, 4357100), (10, 2178550), (11, 1980500), (17, 1281500), (20, 1089275), (22, 990250), (25, 871420), (34, 640750), (44, 495125), (50, 435710), (55, 396100), (68, 320375), (85, 256300), (100, 217855), (110, 198050), (125, 174284), (170, 128150), (187, 116500), (220, 99025), (233, 93500), (250, 87142), (275, 79220), (340, 64075), (374, 58250), (425, 51260), (466, 46750), (500, 43571), (550, 39610), (748, 29125), (850, 25630), (932, 23375), (935, 23300), (1100, 19805), (1165, 18700), (1375, 15844), (1700, 12815), (1870, 11650), (2125, 10252), (2330, 9350), (2563, 8500), (2750, 7922), (3740, 5825), (3961, 5500), (4250, 5126), (4660, 4675)]