20011440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{199}}^1\times {\mathrm{419}}^1$

素因数の和:634

約数の個数: 80

約数和(自身を含む): 62496000

約数和(自身を除く): 42484560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 199, 240, 398, 419, 597, 796, 838, 995, 1194, 1257, 1592, 1676, 1990, 2095, 2388, 2514, 2985, 3184, 3352, 3980, 4190, 4776, 5028, 5970, 6285, 6704, 7960, 8380, 9552, 10056, 11940, 12570, 15920, 16760, 20112, 23880, 25140, 33520, 47760, 50280, 83381, 100560, 166762, 250143, 333524, 416905, 500286, 667048, 833810, 1000572, 1250715, 1334096, 1667620, 2001144, 2501430, 3335240, 4002288, 5002860, 6670480, 10005720, 20011440]

約数ペア:

[(1, 20011440), (2, 10005720), (3, 6670480), (4, 5002860), (5, 4002288), (6, 3335240), (8, 2501430), (10, 2001144), (12, 1667620), (15, 1334096), (16, 1250715), (20, 1000572), (24, 833810), (30, 667048), (40, 500286), (48, 416905), (60, 333524), (80, 250143), (120, 166762), (199, 100560), (240, 83381), (398, 50280), (419, 47760), (597, 33520), (796, 25140), (838, 23880), (995, 20112), (1194, 16760), (1257, 15920), (1592, 12570), (1676, 11940), (1990, 10056), (2095, 9552), (2388, 8380), (2514, 7960), (2985, 6704), (3184, 6285), (3352, 5970), (3980, 5028), (4190, 4776)]