18184467640

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{228793}}^1$

素因数の和:230791

約数の個数: 32

約数和(自身を含む): 40935822480

約数和(自身を除く): 22751354840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 3974, 7948, 9935, 15896, 19870, 39740, 79480, 228793, 457586, 915172, 1143965, 1830344, 2287930, 4575860, 9151720, 454611691, 909223382, 1818446764, 2273058455, 3636893528, 4546116910, 9092233820, 18184467640]

約数ペア:

[(1, 18184467640), (2, 9092233820), (4, 4546116910), (5, 3636893528), (8, 2273058455), (10, 1818446764), (20, 909223382), (40, 454611691), (1987, 9151720), (3974, 4575860), (7948, 2287930), (9935, 1830344), (15896, 1143965), (19870, 915172), (39740, 457586), (79480, 228793)]