1278225

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:71

約数の個数: 72

約数和(自身を含む): 2708160

約数和(自身を除く): 1429935

約数列:

[1, 3, 5, 9, 13, 15, 19, 23, 25, 39, 45, 57, 65, 69, 75, 95, 115, 117, 171, 195, 207, 225, 247, 285, 299, 325, 345, 437, 475, 575, 585, 741, 855, 897, 975, 1035, 1235, 1311, 1425, 1495, 1725, 2185, 2223, 2691, 2925, 3705, 3933, 4275, 4485, 5175, 5681, 6175, 6555, 7475, 10925, 11115, 13455, 17043, 18525, 19665, 22425, 28405, 32775, 51129, 55575, 67275, 85215, 98325, 142025, 255645, 426075, 1278225]

約数ペア:

[(1, 1278225), (3, 426075), (5, 255645), (9, 142025), (13, 98325), (15, 85215), (19, 67275), (23, 55575), (25, 51129), (39, 32775), (45, 28405), (57, 22425), (65, 19665), (69, 18525), (75, 17043), (95, 13455), (115, 11115), (117, 10925), (171, 7475), (195, 6555), (207, 6175), (225, 5681), (247, 5175), (285, 4485), (299, 4275), (325, 3933), (345, 3705), (437, 2925), (475, 2691), (575, 2223), (585, 2185), (741, 1725), (855, 1495), (897, 1425), (975, 1311), (1035, 1235)]