9981990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{563}}^1$

素因数の和:773

約数の個数: 48

約数和(自身を含む): 26131248

約数和(自身を除く): 16149258

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 197, 394, 563, 591, 985, 1126, 1182, 1689, 1773, 1970, 2815, 2955, 3378, 3546, 5067, 5630, 5910, 8445, 8865, 10134, 16890, 17730, 25335, 50670, 110911, 221822, 332733, 554555, 665466, 998199, 1109110, 1663665, 1996398, 3327330, 4990995, 9981990]

約数ペア:

[(1, 9981990), (2, 4990995), (3, 3327330), (5, 1996398), (6, 1663665), (9, 1109110), (10, 998199), (15, 665466), (18, 554555), (30, 332733), (45, 221822), (90, 110911), (197, 50670), (394, 25335), (563, 17730), (591, 16890), (985, 10134), (1126, 8865), (1182, 8445), (1689, 5910), (1773, 5630), (1970, 5067), (2815, 3546), (2955, 3378)]