71887985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{971}}^1$

素因数の和:1073

約数の個数: 32

約数和(自身を含む): 99937152

約数和(自身を除く): 28049167

約数列:

[1, 5, 13, 17, 65, 67, 85, 221, 335, 871, 971, 1105, 1139, 4355, 4855, 5695, 12623, 14807, 16507, 63115, 65057, 74035, 82535, 214591, 325285, 845741, 1072955, 1105969, 4228705, 5529845, 14377597, 71887985]

約数ペア:

[(1, 71887985), (5, 14377597), (13, 5529845), (17, 4228705), (65, 1105969), (67, 1072955), (85, 845741), (221, 325285), (335, 214591), (871, 82535), (971, 74035), (1105, 65057), (1139, 63115), (4355, 16507), (4855, 14807), (5695, 12623)]