81060720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25981}}^1$

素因数の和:26010

約数の個数: 80

約数和(自身を含む): 270628512

約数和(自身を除く): 189567792

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 25981, 51962, 77943, 103924, 129905, 155886, 207848, 259810, 311772, 337753, 389715, 415696, 519620, 623544, 675506, 779430, 1013259, 1039240, 1247088, 1351012, 1558860, 1688765, 2026518, 2078480, 2702024, 3117720, 3377530, 4053036, 5066295, 5404048, 6235440, 6755060, 8106072, 10132590, 13510120, 16212144, 20265180, 27020240, 40530360, 81060720]

約数ペア:

[(1, 81060720), (2, 40530360), (3, 27020240), (4, 20265180), (5, 16212144), (6, 13510120), (8, 10132590), (10, 8106072), (12, 6755060), (13, 6235440), (15, 5404048), (16, 5066295), (20, 4053036), (24, 3377530), (26, 3117720), (30, 2702024), (39, 2078480), (40, 2026518), (48, 1688765), (52, 1558860), (60, 1351012), (65, 1247088), (78, 1039240), (80, 1013259), (104, 779430), (120, 675506), (130, 623544), (156, 519620), (195, 415696), (208, 389715), (240, 337753), (260, 311772), (312, 259810), (390, 207848), (520, 155886), (624, 129905), (780, 103924), (1040, 77943), (1560, 51962), (3120, 25981)]