20920640

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:184

約数の個数: 112

約数和(自身を含む): 55302912

約数和(自身を除く): 34382272

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 47, 52, 64, 65, 80, 94, 104, 107, 130, 160, 188, 208, 214, 235, 260, 320, 376, 416, 428, 470, 520, 535, 611, 752, 832, 856, 940, 1040, 1070, 1222, 1391, 1504, 1712, 1880, 2080, 2140, 2444, 2782, 3008, 3055, 3424, 3760, 4160, 4280, 4888, 5029, 5564, 6110, 6848, 6955, 7520, 8560, 9776, 10058, 11128, 12220, 13910, 15040, 17120, 19552, 20116, 22256, 24440, 25145, 27820, 34240, 39104, 40232, 44512, 48880, 50290, 55640, 65377, 80464, 89024, 97760, 100580, 111280, 130754, 160928, 195520, 201160, 222560, 261508, 321856, 326885, 402320, 445120, 523016, 653770, 804640, 1046032, 1307540, 1609280, 2092064, 2615080, 4184128, 5230160, 10460320, 20920640]

約数ペア:

[(1, 20920640), (2, 10460320), (4, 5230160), (5, 4184128), (8, 2615080), (10, 2092064), (13, 1609280), (16, 1307540), (20, 1046032), (26, 804640), (32, 653770), (40, 523016), (47, 445120), (52, 402320), (64, 326885), (65, 321856), (80, 261508), (94, 222560), (104, 201160), (107, 195520), (130, 160928), (160, 130754), (188, 111280), (208, 100580), (214, 97760), (235, 89024), (260, 80464), (320, 65377), (376, 55640), (416, 50290), (428, 48880), (470, 44512), (520, 40232), (535, 39104), (611, 34240), (752, 27820), (832, 25145), (856, 24440), (940, 22256), (1040, 20116), (1070, 19552), (1222, 17120), (1391, 15040), (1504, 13910), (1712, 12220), (1880, 11128), (2080, 10058), (2140, 9776), (2444, 8560), (2782, 7520), (3008, 6955), (3055, 6848), (3424, 6110), (3760, 5564), (4160, 5029), (4280, 4888)]