81060660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:318

約数の個数: 144

約数和(自身を含む): 258585600

約数和(自身を除く): 177524940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 73, 90, 93, 124, 146, 155, 180, 186, 199, 219, 279, 292, 310, 365, 372, 398, 438, 465, 558, 597, 620, 657, 730, 796, 876, 930, 995, 1095, 1116, 1194, 1314, 1395, 1460, 1791, 1860, 1990, 2190, 2263, 2388, 2628, 2790, 2985, 3285, 3582, 3980, 4380, 4526, 5580, 5970, 6169, 6570, 6789, 7164, 8955, 9052, 11315, 11940, 12338, 13140, 13578, 14527, 17910, 18507, 20367, 22630, 24676, 27156, 29054, 30845, 33945, 35820, 37014, 40734, 43581, 45260, 55521, 58108, 61690, 67890, 72635, 74028, 81468, 87162, 92535, 101835, 111042, 123380, 130743, 135780, 145270, 174324, 185070, 203670, 217905, 222084, 261486, 277605, 290540, 370140, 407340, 435810, 450337, 522972, 555210, 653715, 871620, 900674, 1110420, 1307430, 1351011, 1801348, 2251685, 2614860, 2702022, 4053033, 4503370, 5404044, 6755055, 8106066, 9006740, 13510110, 16212132, 20265165, 27020220, 40530330, 81060660]

約数ペア:

[(1, 81060660), (2, 40530330), (3, 27020220), (4, 20265165), (5, 16212132), (6, 13510110), (9, 9006740), (10, 8106066), (12, 6755055), (15, 5404044), (18, 4503370), (20, 4053033), (30, 2702022), (31, 2614860), (36, 2251685), (45, 1801348), (60, 1351011), (62, 1307430), (73, 1110420), (90, 900674), (93, 871620), (124, 653715), (146, 555210), (155, 522972), (180, 450337), (186, 435810), (199, 407340), (219, 370140), (279, 290540), (292, 277605), (310, 261486), (365, 222084), (372, 217905), (398, 203670), (438, 185070), (465, 174324), (558, 145270), (597, 135780), (620, 130743), (657, 123380), (730, 111042), (796, 101835), (876, 92535), (930, 87162), (995, 81468), (1095, 74028), (1116, 72635), (1194, 67890), (1314, 61690), (1395, 58108), (1460, 55521), (1791, 45260), (1860, 43581), (1990, 40734), (2190, 37014), (2263, 35820), (2388, 33945), (2628, 30845), (2790, 29054), (2985, 27156), (3285, 24676), (3582, 22630), (3980, 20367), (4380, 18507), (4526, 17910), (5580, 14527), (5970, 13578), (6169, 13140), (6570, 12338), (6789, 11940), (7164, 11315), (8955, 9052)]