1397500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:80

約数の個数: 60

約数和(自身を含む): 3367672

約数和(自身を除く): 1970172

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 86, 100, 125, 130, 172, 215, 250, 260, 325, 430, 500, 559, 625, 650, 860, 1075, 1118, 1250, 1300, 1625, 2150, 2236, 2500, 2795, 3250, 4300, 5375, 5590, 6500, 8125, 10750, 11180, 13975, 16250, 21500, 26875, 27950, 32500, 53750, 55900, 69875, 107500, 139750, 279500, 349375, 698750, 1397500]

約数ペア:

[(1, 1397500), (2, 698750), (4, 349375), (5, 279500), (10, 139750), (13, 107500), (20, 69875), (25, 55900), (26, 53750), (43, 32500), (50, 27950), (52, 26875), (65, 21500), (86, 16250), (100, 13975), (125, 11180), (130, 10750), (172, 8125), (215, 6500), (250, 5590), (260, 5375), (325, 4300), (430, 3250), (500, 2795), (559, 2500), (625, 2236), (650, 2150), (860, 1625), (1075, 1300), (1118, 1250)]