20001690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{769}}^1$

素因数の和:816

約数の個数: 72

約数和(自身を含む): 55315260

約数和(自身を除く): 35313570

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 45, 51, 85, 90, 102, 153, 170, 255, 289, 306, 510, 578, 765, 769, 867, 1445, 1530, 1538, 1734, 2307, 2601, 2890, 3845, 4335, 4614, 5202, 6921, 7690, 8670, 11535, 13005, 13073, 13842, 23070, 26010, 26146, 34605, 39219, 65365, 69210, 78438, 117657, 130730, 196095, 222241, 235314, 392190, 444482, 588285, 666723, 1111205, 1176570, 1333446, 2000169, 2222410, 3333615, 4000338, 6667230, 10000845, 20001690]

約数ペア:

[(1, 20001690), (2, 10000845), (3, 6667230), (5, 4000338), (6, 3333615), (9, 2222410), (10, 2000169), (15, 1333446), (17, 1176570), (18, 1111205), (30, 666723), (34, 588285), (45, 444482), (51, 392190), (85, 235314), (90, 222241), (102, 196095), (153, 130730), (170, 117657), (255, 78438), (289, 69210), (306, 65365), (510, 39219), (578, 34605), (765, 26146), (769, 26010), (867, 23070), (1445, 13842), (1530, 13073), (1538, 13005), (1734, 11535), (2307, 8670), (2601, 7690), (2890, 6921), (3845, 5202), (4335, 4614)]