198788940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{157769}}^1$

素因数の和:157791

約数の個数: 72

約数和(自身を含む): 689139360

約数和(自身を除く): 490350420

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 157769, 315538, 473307, 631076, 788845, 946614, 1104383, 1419921, 1577690, 1893228, 2208766, 2366535, 2839842, 3155380, 3313149, 4417532, 4733070, 5521915, 5679684, 6626298, 7099605, 9466140, 9939447, 11043830, 13252596, 14199210, 16565745, 19878894, 22087660, 28398420, 33131490, 39757788, 49697235, 66262980, 99394470, 198788940]

約数ペア:

[(1, 198788940), (2, 99394470), (3, 66262980), (4, 49697235), (5, 39757788), (6, 33131490), (7, 28398420), (9, 22087660), (10, 19878894), (12, 16565745), (14, 14199210), (15, 13252596), (18, 11043830), (20, 9939447), (21, 9466140), (28, 7099605), (30, 6626298), (35, 5679684), (36, 5521915), (42, 4733070), (45, 4417532), (60, 3313149), (63, 3155380), (70, 2839842), (84, 2366535), (90, 2208766), (105, 1893228), (126, 1577690), (140, 1419921), (180, 1104383), (210, 946614), (252, 788845), (315, 631076), (420, 473307), (630, 315538), (1260, 157769)]