28545975

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{439}}^1$

素因数の和:489

約数の個数: 54

約数和(自身を含む): 54437240

約数和(自身を除く): 25891265

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 289, 425, 439, 765, 867, 1275, 1317, 1445, 2195, 2601, 3825, 3951, 4335, 6585, 7225, 7463, 10975, 13005, 19755, 21675, 22389, 32925, 37315, 65025, 67167, 98775, 111945, 126871, 186575, 335835, 380613, 559725, 634355, 1141839, 1679175, 1903065, 3171775, 5709195, 9515325, 28545975]

約数ペア:

[(1, 28545975), (3, 9515325), (5, 5709195), (9, 3171775), (15, 1903065), (17, 1679175), (25, 1141839), (45, 634355), (51, 559725), (75, 380613), (85, 335835), (153, 186575), (225, 126871), (255, 111945), (289, 98775), (425, 67167), (439, 65025), (765, 37315), (867, 32925), (1275, 22389), (1317, 21675), (1445, 19755), (2195, 13005), (2601, 10975), (3825, 7463), (3951, 7225), (4335, 6585)]