81569415

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1\times {\mathrm{401}}^1$

素因数の和:671

約数の個数: 32

約数和(自身を含む): 133373952

約数和(自身を除く): 51804537

約数列:

[1, 3, 5, 15, 71, 191, 213, 355, 401, 573, 955, 1065, 1203, 2005, 2865, 6015, 13561, 28471, 40683, 67805, 76591, 85413, 142355, 203415, 229773, 382955, 427065, 1148865, 5437961, 16313883, 27189805, 81569415]

約数ペア:

[(1, 81569415), (3, 27189805), (5, 16313883), (15, 5437961), (71, 1148865), (191, 427065), (213, 382955), (355, 229773), (401, 203415), (573, 142355), (955, 85413), (1065, 76591), (1203, 67805), (2005, 40683), (2865, 28471), (6015, 13561)]