13007218480

素因数分解:

$2^4\times 5^1\times {\mathrm{491}}^1\times {\mathrm{331141}}^1$

素因数の和:331645

約数の個数: 40

約数和(自身を含む): 30303466704

約数和(自身を除く): 17296248224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 491, 982, 1964, 2455, 3928, 4910, 7856, 9820, 19640, 39280, 331141, 662282, 1324564, 1655705, 2649128, 3311410, 5298256, 6622820, 13245640, 26491280, 162590231, 325180462, 650360924, 812951155, 1300721848, 1625902310, 2601443696, 3251804620, 6503609240, 13007218480]

約数ペア:

[(1, 13007218480), (2, 6503609240), (4, 3251804620), (5, 2601443696), (8, 1625902310), (10, 1300721848), (16, 812951155), (20, 650360924), (40, 325180462), (80, 162590231), (491, 26491280), (982, 13245640), (1964, 6622820), (2455, 5298256), (3928, 3311410), (4910, 2649128), (7856, 1655705), (9820, 1324564), (19640, 662282), (39280, 331141)]