217697925

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{991}}^1$

素因数の和:1134

約数の個数: 48

約数和(自身を含む): 376404480

約数和(自身を除く): 158706555

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 101, 145, 303, 435, 505, 725, 991, 1515, 2175, 2525, 2929, 2973, 4955, 7575, 8787, 14645, 14865, 24775, 28739, 43935, 73225, 74325, 86217, 100091, 143695, 219675, 300273, 431085, 500455, 718475, 1501365, 2155425, 2502275, 2902639, 7506825, 8707917, 14513195, 43539585, 72565975, 217697925]

約数ペア:

[(1, 217697925), (3, 72565975), (5, 43539585), (15, 14513195), (25, 8707917), (29, 7506825), (75, 2902639), (87, 2502275), (101, 2155425), (145, 1501365), (303, 718475), (435, 500455), (505, 431085), (725, 300273), (991, 219675), (1515, 143695), (2175, 100091), (2525, 86217), (2929, 74325), (2973, 73225), (4955, 43935), (7575, 28739), (8787, 24775), (14645, 14865)]