18895440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{601}}^1$

素因数の和:748

約数の個数: 80

約数和(自身を含む): 59121216

約数和(自身を除く): 40225776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 131, 240, 262, 393, 524, 601, 655, 786, 1048, 1202, 1310, 1572, 1803, 1965, 2096, 2404, 2620, 3005, 3144, 3606, 3930, 4808, 5240, 6010, 6288, 7212, 7860, 9015, 9616, 10480, 12020, 14424, 15720, 18030, 24040, 28848, 31440, 36060, 48080, 72120, 78731, 144240, 157462, 236193, 314924, 393655, 472386, 629848, 787310, 944772, 1180965, 1259696, 1574620, 1889544, 2361930, 3149240, 3779088, 4723860, 6298480, 9447720, 18895440]

約数ペア:

[(1, 18895440), (2, 9447720), (3, 6298480), (4, 4723860), (5, 3779088), (6, 3149240), (8, 2361930), (10, 1889544), (12, 1574620), (15, 1259696), (16, 1180965), (20, 944772), (24, 787310), (30, 629848), (40, 472386), (48, 393655), (60, 314924), (80, 236193), (120, 157462), (131, 144240), (240, 78731), (262, 72120), (393, 48080), (524, 36060), (601, 31440), (655, 28848), (786, 24040), (1048, 18030), (1202, 15720), (1310, 14424), (1572, 12020), (1803, 10480), (1965, 9616), (2096, 9015), (2404, 7860), (2620, 7212), (3005, 6288), (3144, 6010), (3606, 5240), (3930, 4808)]