21456320

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3529}}^1$

素因数の和:3565

約数の個数: 56

約数和(自身を含む): 53797200

約数和(自身を除く): 32340880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3529, 6080, 7058, 14116, 17645, 28232, 35290, 56464, 67051, 70580, 112928, 134102, 141160, 225856, 268204, 282320, 335255, 536408, 564640, 670510, 1072816, 1129280, 1341020, 2145632, 2682040, 4291264, 5364080, 10728160, 21456320]

約数ペア:

[(1, 21456320), (2, 10728160), (4, 5364080), (5, 4291264), (8, 2682040), (10, 2145632), (16, 1341020), (19, 1129280), (20, 1072816), (32, 670510), (38, 564640), (40, 536408), (64, 335255), (76, 282320), (80, 268204), (95, 225856), (152, 141160), (160, 134102), (190, 112928), (304, 70580), (320, 67051), (380, 56464), (608, 35290), (760, 28232), (1216, 17645), (1520, 14116), (3040, 7058), (3529, 6080)]