20005071125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{2857}}^1$

素因数の和:3055

約数の個数: 64

約数和(自身を含む): 27963586560

約数和(自身を除く): 7958515435

約数列:

[1, 5, 13, 25, 31, 65, 125, 139, 155, 325, 403, 695, 775, 1625, 1807, 2015, 2857, 3475, 3875, 4309, 9035, 10075, 14285, 17375, 21545, 37141, 45175, 50375, 56017, 71425, 88567, 107725, 185705, 225875, 280085, 357125, 397123, 442835, 538625, 928525, 1151371, 1400425, 1985615, 2214175, 4642625, 5162599, 5756855, 7002125, 9928075, 11070875, 12310813, 25812995, 28784275, 49640375, 61554065, 129064975, 143921375, 160040569, 307770325, 645324875, 800202845, 1538851625, 4001014225, 20005071125]

約数ペア:

[(1, 20005071125), (5, 4001014225), (13, 1538851625), (25, 800202845), (31, 645324875), (65, 307770325), (125, 160040569), (139, 143921375), (155, 129064975), (325, 61554065), (403, 49640375), (695, 28784275), (775, 25812995), (1625, 12310813), (1807, 11070875), (2015, 9928075), (2857, 7002125), (3475, 5756855), (3875, 5162599), (4309, 4642625), (9035, 2214175), (10075, 1985615), (14285, 1400425), (17375, 1151371), (21545, 928525), (37141, 538625), (45175, 442835), (50375, 397123), (56017, 357125), (71425, 280085), (88567, 225875), (107725, 185705)]