280403775

素因数分解:

$3^5\times 5^2\times {\mathrm{101}}^1\times {\mathrm{457}}^1$

素因数の和:583

約数の個数: 72

約数和(自身を含む): 527143344

約数和(自身を除く): 246739569

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 101, 135, 225, 243, 303, 405, 457, 505, 675, 909, 1215, 1371, 1515, 2025, 2285, 2525, 2727, 4113, 4545, 6075, 6855, 7575, 8181, 11425, 12339, 13635, 20565, 22725, 24543, 34275, 37017, 40905, 46157, 61695, 68175, 102825, 111051, 122715, 138471, 185085, 204525, 230785, 308475, 415413, 555255, 613575, 692355, 925425, 1153925, 1246239, 2077065, 2776275, 3461775, 3738717, 6231195, 10385325, 11216151, 18693585, 31155975, 56080755, 93467925, 280403775]

約数ペア:

[(1, 280403775), (3, 93467925), (5, 56080755), (9, 31155975), (15, 18693585), (25, 11216151), (27, 10385325), (45, 6231195), (75, 3738717), (81, 3461775), (101, 2776275), (135, 2077065), (225, 1246239), (243, 1153925), (303, 925425), (405, 692355), (457, 613575), (505, 555255), (675, 415413), (909, 308475), (1215, 230785), (1371, 204525), (1515, 185085), (2025, 138471), (2285, 122715), (2525, 111051), (2727, 102825), (4113, 68175), (4545, 61695), (6075, 46157), (6855, 40905), (7575, 37017), (8181, 34275), (11425, 24543), (12339, 22725), (13635, 20565)]