81814140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5107}}^1$

素因数の和:5211

約数の個数: 72

約数和(自身を含む): 251007120

約数和(自身を除く): 169192980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 89, 90, 178, 180, 267, 356, 445, 534, 801, 890, 1068, 1335, 1602, 1780, 2670, 3204, 4005, 5107, 5340, 8010, 10214, 15321, 16020, 20428, 25535, 30642, 45963, 51070, 61284, 76605, 91926, 102140, 153210, 183852, 229815, 306420, 454523, 459630, 909046, 919260, 1363569, 1818092, 2272615, 2727138, 4090707, 4545230, 5454276, 6817845, 8181414, 9090460, 13635690, 16362828, 20453535, 27271380, 40907070, 81814140]

約数ペア:

[(1, 81814140), (2, 40907070), (3, 27271380), (4, 20453535), (5, 16362828), (6, 13635690), (9, 9090460), (10, 8181414), (12, 6817845), (15, 5454276), (18, 4545230), (20, 4090707), (30, 2727138), (36, 2272615), (45, 1818092), (60, 1363569), (89, 919260), (90, 909046), (178, 459630), (180, 454523), (267, 306420), (356, 229815), (445, 183852), (534, 153210), (801, 102140), (890, 91926), (1068, 76605), (1335, 61284), (1602, 51070), (1780, 45963), (2670, 30642), (3204, 25535), (4005, 20428), (5107, 16020), (5340, 15321), (8010, 10214)]