7819420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:203

約数の個数: 72

約数和(自身を含む): 19535040

約数和(自身を除く): 11715620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 101, 140, 158, 196, 202, 245, 316, 395, 404, 490, 505, 553, 707, 790, 980, 1010, 1106, 1414, 1580, 2020, 2212, 2765, 2828, 3535, 3871, 4949, 5530, 7070, 7742, 7979, 9898, 11060, 14140, 15484, 15958, 19355, 19796, 24745, 31916, 38710, 39895, 49490, 55853, 77420, 79790, 98980, 111706, 159580, 223412, 279265, 390971, 558530, 781942, 1117060, 1563884, 1954855, 3909710, 7819420]

約数ペア:

[(1, 7819420), (2, 3909710), (4, 1954855), (5, 1563884), (7, 1117060), (10, 781942), (14, 558530), (20, 390971), (28, 279265), (35, 223412), (49, 159580), (70, 111706), (79, 98980), (98, 79790), (101, 77420), (140, 55853), (158, 49490), (196, 39895), (202, 38710), (245, 31916), (316, 24745), (395, 19796), (404, 19355), (490, 15958), (505, 15484), (553, 14140), (707, 11060), (790, 9898), (980, 7979), (1010, 7742), (1106, 7070), (1414, 5530), (1580, 4949), (2020, 3871), (2212, 3535), (2765, 2828)]