21394340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3137}}^1$

素因数の和:3188

約数の個数: 48

約数和(自身を含む): 50609664

約数和(自身を除く): 29215324

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3137, 3410, 6274, 6820, 12548, 15685, 31370, 34507, 62740, 69014, 97247, 138028, 172535, 194494, 345070, 388988, 486235, 690140, 972470, 1069717, 1944940, 2139434, 4278868, 5348585, 10697170, 21394340]

約数ペア:

[(1, 21394340), (2, 10697170), (4, 5348585), (5, 4278868), (10, 2139434), (11, 1944940), (20, 1069717), (22, 972470), (31, 690140), (44, 486235), (55, 388988), (62, 345070), (110, 194494), (124, 172535), (155, 138028), (220, 97247), (310, 69014), (341, 62740), (620, 34507), (682, 31370), (1364, 15685), (1705, 12548), (3137, 6820), (3410, 6274)]