888905140

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1\times {\mathrm{1291}}^1$

素因数の和:1672

約数の個数: 48

約数和(自身を含む): 1888387200

約数和(自身を除く): 999482060

約数列:

[1, 2, 4, 5, 10, 20, 173, 199, 346, 398, 692, 796, 865, 995, 1291, 1730, 1990, 2582, 3460, 3980, 5164, 6455, 12910, 25820, 34427, 68854, 137708, 172135, 223343, 256909, 344270, 446686, 513818, 688540, 893372, 1027636, 1116715, 1284545, 2233430, 2569090, 4466860, 5138180, 44445257, 88890514, 177781028, 222226285, 444452570, 888905140]

約数ペア:

[(1, 888905140), (2, 444452570), (4, 222226285), (5, 177781028), (10, 88890514), (20, 44445257), (173, 5138180), (199, 4466860), (346, 2569090), (398, 2233430), (692, 1284545), (796, 1116715), (865, 1027636), (995, 893372), (1291, 688540), (1730, 513818), (1990, 446686), (2582, 344270), (3460, 256909), (3980, 223343), (5164, 172135), (6455, 137708), (12910, 68854), (25820, 34427)]