15831225

素因数分解:

$3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{991}}^1$

素因数の和:1078

約数の個数: 36

約数和(自身を含む): 28783872

約数和(自身を除く): 12952647

約数列:

[1, 3, 5, 9, 15, 25, 45, 71, 75, 213, 225, 355, 639, 991, 1065, 1775, 2973, 3195, 4955, 5325, 8919, 14865, 15975, 24775, 44595, 70361, 74325, 211083, 222975, 351805, 633249, 1055415, 1759025, 3166245, 5277075, 15831225]

約数ペア:

[(1, 15831225), (3, 5277075), (5, 3166245), (9, 1759025), (15, 1055415), (25, 633249), (45, 351805), (71, 222975), (75, 211083), (213, 74325), (225, 70361), (355, 44595), (639, 24775), (991, 15975), (1065, 14865), (1775, 8919), (2973, 5325), (3195, 4955)]