30918860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{269}}^1\times {\mathrm{821}}^1$

素因数の和:1106

約数の個数: 48

約数和(自身を含む): 74571840

約数和(自身を除く): 43652980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 269, 538, 821, 1076, 1345, 1642, 1883, 2690, 3284, 3766, 4105, 5380, 5747, 7532, 8210, 9415, 11494, 16420, 18830, 22988, 28735, 37660, 57470, 114940, 220849, 441698, 883396, 1104245, 1545943, 2208490, 3091886, 4416980, 6183772, 7729715, 15459430, 30918860]

約数ペア:

[(1, 30918860), (2, 15459430), (4, 7729715), (5, 6183772), (7, 4416980), (10, 3091886), (14, 2208490), (20, 1545943), (28, 1104245), (35, 883396), (70, 441698), (140, 220849), (269, 114940), (538, 57470), (821, 37660), (1076, 28735), (1345, 22988), (1642, 18830), (1883, 16420), (2690, 11494), (3284, 9415), (3766, 8210), (4105, 7532), (5380, 5747)]