81918675

素因数分解:

$3^3\times 5^2\times {\mathrm{157}}^1\times {\mathrm{773}}^1$

素因数の和:949

約数の個数: 48

約数和(自身を含む): 151642080

約数和(自身を除く): 69723405

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 157, 225, 471, 675, 773, 785, 1413, 2319, 2355, 3865, 3925, 4239, 6957, 7065, 11595, 11775, 19325, 20871, 21195, 34785, 35325, 57975, 104355, 105975, 121361, 173925, 364083, 521775, 606805, 1092249, 1820415, 3034025, 3276747, 5461245, 9102075, 16383735, 27306225, 81918675]

約数ペア:

[(1, 81918675), (3, 27306225), (5, 16383735), (9, 9102075), (15, 5461245), (25, 3276747), (27, 3034025), (45, 1820415), (75, 1092249), (135, 606805), (157, 521775), (225, 364083), (471, 173925), (675, 121361), (773, 105975), (785, 104355), (1413, 57975), (2319, 35325), (2355, 34785), (3865, 21195), (3925, 20871), (4239, 19325), (6957, 11775), (7065, 11595)]