278764485

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{43}}^2$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 502477920

約数和(自身を除く): 223713435

約数列:

[1, 3, 5, 15, 19, 23, 43, 57, 69, 95, 115, 129, 215, 285, 345, 437, 529, 645, 817, 989, 1311, 1587, 1849, 2185, 2451, 2645, 2967, 4085, 4945, 5547, 6555, 7935, 9245, 10051, 12255, 14835, 18791, 22747, 27735, 30153, 35131, 42527, 50255, 56373, 68241, 93955, 105393, 113735, 127581, 150765, 175655, 212635, 281865, 341205, 432193, 526965, 637905, 808013, 978121, 1296579, 2160965, 2424039, 2934363, 4040065, 4890605, 6482895, 12120195, 14671815, 18584299, 55752897, 92921495, 278764485]

約数ペア:

[(1, 278764485), (3, 92921495), (5, 55752897), (15, 18584299), (19, 14671815), (23, 12120195), (43, 6482895), (57, 4890605), (69, 4040065), (95, 2934363), (115, 2424039), (129, 2160965), (215, 1296579), (285, 978121), (345, 808013), (437, 637905), (529, 526965), (645, 432193), (817, 341205), (989, 281865), (1311, 212635), (1587, 175655), (1849, 150765), (2185, 127581), (2451, 113735), (2645, 105393), (2967, 93955), (4085, 68241), (4945, 56373), (5547, 50255), (6555, 42527), (7935, 35131), (9245, 30153), (10051, 27735), (12255, 22747), (14835, 18791)]