18121980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{9743}}^1$

素因数の和:9786

約数の個数: 48

約数和(自身を含む): 52383744

約数和(自身を除く): 34261764

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 620, 930, 1860, 9743, 19486, 29229, 38972, 48715, 58458, 97430, 116916, 146145, 194860, 292290, 302033, 584580, 604066, 906099, 1208132, 1510165, 1812198, 3020330, 3624396, 4530495, 6040660, 9060990, 18121980]

約数ペア:

[(1, 18121980), (2, 9060990), (3, 6040660), (4, 4530495), (5, 3624396), (6, 3020330), (10, 1812198), (12, 1510165), (15, 1208132), (20, 906099), (30, 604066), (31, 584580), (60, 302033), (62, 292290), (93, 194860), (124, 146145), (155, 116916), (186, 97430), (310, 58458), (372, 48715), (465, 38972), (620, 29229), (930, 19486), (1860, 9743)]