20778880325

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1297}}^1\times {\mathrm{2129}}^1$

素因数の和:3486

約数の個数: 48

約数和(自身を含む): 30168842880

約数和(自身を除く): 9389962555

約数列:

[1, 5, 7, 25, 35, 43, 175, 215, 301, 1075, 1297, 1505, 2129, 6485, 7525, 9079, 10645, 14903, 32425, 45395, 53225, 55771, 74515, 91547, 226975, 278855, 372575, 390397, 457735, 640829, 1394275, 1951985, 2288675, 2761313, 3204145, 9759925, 13806565, 16020725, 19329191, 69032825, 96645955, 118736459, 483229775, 593682295, 831155213, 2968411475, 4155776065, 20778880325]

約数ペア:

[(1, 20778880325), (5, 4155776065), (7, 2968411475), (25, 831155213), (35, 593682295), (43, 483229775), (175, 118736459), (215, 96645955), (301, 69032825), (1075, 19329191), (1297, 16020725), (1505, 13806565), (2129, 9759925), (6485, 3204145), (7525, 2761313), (9079, 2288675), (10645, 1951985), (14903, 1394275), (32425, 640829), (45395, 457735), (53225, 390397), (55771, 372575), (74515, 278855), (91547, 226975)]