261389325

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{2557}}^1$

素因数の和:2646

約数の個数: 48

約数和(自身を含む): 456756480

約数和(自身を除く): 195367155

約数列:

[1, 3, 5, 15, 25, 29, 47, 75, 87, 141, 145, 235, 435, 705, 725, 1175, 1363, 2175, 2557, 3525, 4089, 6815, 7671, 12785, 20445, 34075, 38355, 63925, 74153, 102225, 120179, 191775, 222459, 360537, 370765, 600895, 1112295, 1802685, 1853825, 3004475, 3485191, 5561475, 9013425, 10455573, 17425955, 52277865, 87129775, 261389325]

約数ペア:

[(1, 261389325), (3, 87129775), (5, 52277865), (15, 17425955), (25, 10455573), (29, 9013425), (47, 5561475), (75, 3485191), (87, 3004475), (141, 1853825), (145, 1802685), (235, 1112295), (435, 600895), (705, 370765), (725, 360537), (1175, 222459), (1363, 191775), (2175, 120179), (2557, 102225), (3525, 74153), (4089, 63925), (6815, 38355), (7671, 34075), (12785, 20445)]