31181580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{821}}^1$

素因数の和:1047

約数の個数: 72

約数和(自身を含む): 95148144

約数和(自身を除く): 63966564

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 211, 422, 633, 821, 844, 1055, 1266, 1642, 1899, 2110, 2463, 2532, 3165, 3284, 3798, 4105, 4220, 4926, 6330, 7389, 7596, 8210, 9495, 9852, 12315, 12660, 14778, 16420, 18990, 24630, 29556, 36945, 37980, 49260, 73890, 147780, 173231, 346462, 519693, 692924, 866155, 1039386, 1559079, 1732310, 2078772, 2598465, 3118158, 3464620, 5196930, 6236316, 7795395, 10393860, 15590790, 31181580]

約数ペア:

[(1, 31181580), (2, 15590790), (3, 10393860), (4, 7795395), (5, 6236316), (6, 5196930), (9, 3464620), (10, 3118158), (12, 2598465), (15, 2078772), (18, 1732310), (20, 1559079), (30, 1039386), (36, 866155), (45, 692924), (60, 519693), (90, 346462), (180, 173231), (211, 147780), (422, 73890), (633, 49260), (821, 37980), (844, 36945), (1055, 29556), (1266, 24630), (1642, 18990), (1899, 16420), (2110, 14778), (2463, 12660), (2532, 12315), (3165, 9852), (3284, 9495), (3798, 8210), (4105, 7596), (4220, 7389), (4926, 6330)]