20612925

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^2\times {\mathrm{317}}^1$

素因数の和:367

約数の個数: 54

約数和(自身を含む): 39343278

約数和(自身を除く): 18730353

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 289, 317, 425, 765, 867, 951, 1275, 1445, 1585, 2601, 2853, 3825, 4335, 4755, 5389, 7225, 7925, 13005, 14265, 16167, 21675, 23775, 26945, 48501, 65025, 71325, 80835, 91613, 134725, 242505, 274839, 404175, 458065, 824517, 1212525, 1374195, 2290325, 4122585, 6870975, 20612925]

約数ペア:

[(1, 20612925), (3, 6870975), (5, 4122585), (9, 2290325), (15, 1374195), (17, 1212525), (25, 824517), (45, 458065), (51, 404175), (75, 274839), (85, 242505), (153, 134725), (225, 91613), (255, 80835), (289, 71325), (317, 65025), (425, 48501), (765, 26945), (867, 23775), (951, 21675), (1275, 16167), (1445, 14265), (1585, 13005), (2601, 7925), (2853, 7225), (3825, 5389), (4335, 4755)]