21562640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{229}}^1$

素因数の和:360

約数の個数: 80

約数和(自身を含む): 55442880

約数和(自身を除く): 33880240

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 107, 110, 176, 214, 220, 229, 428, 440, 458, 535, 856, 880, 916, 1070, 1145, 1177, 1712, 1832, 2140, 2290, 2354, 2519, 3664, 4280, 4580, 4708, 5038, 5885, 8560, 9160, 9416, 10076, 11770, 12595, 18320, 18832, 20152, 23540, 24503, 25190, 40304, 47080, 49006, 50380, 94160, 98012, 100760, 122515, 196024, 201520, 245030, 269533, 392048, 490060, 539066, 980120, 1078132, 1347665, 1960240, 2156264, 2695330, 4312528, 5390660, 10781320, 21562640]

約数ペア:

[(1, 21562640), (2, 10781320), (4, 5390660), (5, 4312528), (8, 2695330), (10, 2156264), (11, 1960240), (16, 1347665), (20, 1078132), (22, 980120), (40, 539066), (44, 490060), (55, 392048), (80, 269533), (88, 245030), (107, 201520), (110, 196024), (176, 122515), (214, 100760), (220, 98012), (229, 94160), (428, 50380), (440, 49006), (458, 47080), (535, 40304), (856, 25190), (880, 24503), (916, 23540), (1070, 20152), (1145, 18832), (1177, 18320), (1712, 12595), (1832, 11770), (2140, 10076), (2290, 9416), (2354, 9160), (2519, 8560), (3664, 5885), (4280, 5038), (4580, 4708)]