217398540

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{84263}}^1$

素因数の和:84318

約数の個数: 48

約数和(自身を含む): 622879488

約数和(自身を除く): 405480948

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 84263, 168526, 252789, 337052, 421315, 505578, 842630, 1011156, 1263945, 1685260, 2527890, 3623309, 5055780, 7246618, 10869927, 14493236, 18116545, 21739854, 36233090, 43479708, 54349635, 72466180, 108699270, 217398540]

約数ペア:

[(1, 217398540), (2, 108699270), (3, 72466180), (4, 54349635), (5, 43479708), (6, 36233090), (10, 21739854), (12, 18116545), (15, 14493236), (20, 10869927), (30, 7246618), (43, 5055780), (60, 3623309), (86, 2527890), (129, 1685260), (172, 1263945), (215, 1011156), (258, 842630), (430, 505578), (516, 421315), (645, 337052), (860, 252789), (1290, 168526), (2580, 84263)]