21561760

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12251}}^1$

素因数の和:12277

約数の個数: 48

約数和(自身を含む): 55575072

約数和(自身を除く): 34013312

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12251, 24502, 49004, 61255, 98008, 122510, 134761, 196016, 245020, 269522, 392032, 490040, 539044, 673805, 980080, 1078088, 1347610, 1960160, 2156176, 2695220, 4312352, 5390440, 10780880, 21561760]

約数ペア:

[(1, 21561760), (2, 10780880), (4, 5390440), (5, 4312352), (8, 2695220), (10, 2156176), (11, 1960160), (16, 1347610), (20, 1078088), (22, 980080), (32, 673805), (40, 539044), (44, 490040), (55, 392032), (80, 269522), (88, 245020), (110, 196016), (160, 134761), (176, 122510), (220, 98008), (352, 61255), (440, 49004), (880, 24502), (1760, 12251)]