80479720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{1583}}^1$

素因数の和:1666

約数の個数: 64

約数和(自身を含む): 191600640

約数和(自身を除く): 111120920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 410, 620, 820, 1240, 1271, 1583, 1640, 2542, 3166, 5084, 6332, 6355, 7915, 10168, 12664, 12710, 15830, 25420, 31660, 49073, 50840, 63320, 64903, 98146, 129806, 196292, 245365, 259612, 324515, 392584, 490730, 519224, 649030, 981460, 1298060, 1962920, 2011993, 2596120, 4023986, 8047972, 10059965, 16095944, 20119930, 40239860, 80479720]

約数ペア:

[(1, 80479720), (2, 40239860), (4, 20119930), (5, 16095944), (8, 10059965), (10, 8047972), (20, 4023986), (31, 2596120), (40, 2011993), (41, 1962920), (62, 1298060), (82, 981460), (124, 649030), (155, 519224), (164, 490730), (205, 392584), (248, 324515), (310, 259612), (328, 245365), (410, 196292), (620, 129806), (820, 98146), (1240, 64903), (1271, 63320), (1583, 50840), (1640, 49073), (2542, 31660), (3166, 25420), (5084, 15830), (6332, 12710), (6355, 12664), (7915, 10168)]