18308540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 40101600

約数和(自身を除く): 21793060

約数列:

[1, 2, 4, 5, 10, 20, 43, 61, 86, 122, 172, 215, 244, 305, 349, 430, 610, 698, 860, 1220, 1396, 1745, 2623, 3490, 5246, 6980, 10492, 13115, 15007, 21289, 26230, 30014, 42578, 52460, 60028, 75035, 85156, 106445, 150070, 212890, 300140, 425780, 915427, 1830854, 3661708, 4577135, 9154270, 18308540]

約数ペア:

[(1, 18308540), (2, 9154270), (4, 4577135), (5, 3661708), (10, 1830854), (20, 915427), (43, 425780), (61, 300140), (86, 212890), (122, 150070), (172, 106445), (215, 85156), (244, 75035), (305, 60028), (349, 52460), (430, 42578), (610, 30014), (698, 26230), (860, 21289), (1220, 15007), (1396, 13115), (1745, 10492), (2623, 6980), (3490, 5246)]