81456310

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:497

約数の個数: 48

約数和(自身を含む): 160299216

約数和(自身を除く): 78842906

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 169, 307, 314, 338, 614, 785, 845, 1535, 1570, 1690, 2041, 3070, 3991, 4082, 7982, 10205, 19955, 20410, 26533, 39910, 48199, 51883, 53066, 96398, 103766, 132665, 240995, 259415, 265330, 481990, 518830, 626587, 1253174, 3132935, 6265870, 8145631, 16291262, 40728155, 81456310]

約数ペア:

[(1, 81456310), (2, 40728155), (5, 16291262), (10, 8145631), (13, 6265870), (26, 3132935), (65, 1253174), (130, 626587), (157, 518830), (169, 481990), (307, 265330), (314, 259415), (338, 240995), (614, 132665), (785, 103766), (845, 96398), (1535, 53066), (1570, 51883), (1690, 48199), (2041, 39910), (3070, 26533), (3991, 20410), (4082, 19955), (7982, 10205)]