18260240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:280

約数の個数: 80

約数和(自身を含む): 45235200

約数和(自身を除く): 26974960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 37, 40, 62, 74, 80, 124, 148, 155, 185, 199, 248, 296, 310, 370, 398, 496, 592, 620, 740, 796, 995, 1147, 1240, 1480, 1592, 1990, 2294, 2480, 2960, 3184, 3980, 4588, 5735, 6169, 7363, 7960, 9176, 11470, 12338, 14726, 15920, 18352, 22940, 24676, 29452, 30845, 36815, 45880, 49352, 58904, 61690, 73630, 91760, 98704, 117808, 123380, 147260, 228253, 246760, 294520, 456506, 493520, 589040, 913012, 1141265, 1826024, 2282530, 3652048, 4565060, 9130120, 18260240]

約数ペア:

[(1, 18260240), (2, 9130120), (4, 4565060), (5, 3652048), (8, 2282530), (10, 1826024), (16, 1141265), (20, 913012), (31, 589040), (37, 493520), (40, 456506), (62, 294520), (74, 246760), (80, 228253), (124, 147260), (148, 123380), (155, 117808), (185, 98704), (199, 91760), (248, 73630), (296, 61690), (310, 58904), (370, 49352), (398, 45880), (496, 36815), (592, 30845), (620, 29452), (740, 24676), (796, 22940), (995, 18352), (1147, 15920), (1240, 14726), (1480, 12338), (1592, 11470), (1990, 9176), (2294, 7960), (2480, 7363), (2960, 6169), (3184, 5735), (3980, 4588)]