28028420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:333

約数の個数: 96

約数和(自身を含む): 72817920

約数和(自身を除く): 44789500

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 41, 70, 76, 82, 95, 133, 140, 164, 190, 205, 257, 266, 287, 380, 410, 514, 532, 574, 665, 779, 820, 1028, 1148, 1285, 1330, 1435, 1558, 1799, 2570, 2660, 2870, 3116, 3598, 3895, 4883, 5140, 5453, 5740, 7196, 7790, 8995, 9766, 10537, 10906, 15580, 17990, 19532, 21074, 21812, 24415, 27265, 34181, 35980, 42148, 48830, 52685, 54530, 68362, 73759, 97660, 105370, 109060, 136724, 147518, 170905, 200203, 210740, 295036, 341810, 368795, 400406, 683620, 737590, 800812, 1001015, 1401421, 1475180, 2002030, 2802842, 4004060, 5605684, 7007105, 14014210, 28028420]

約数ペア:

[(1, 28028420), (2, 14014210), (4, 7007105), (5, 5605684), (7, 4004060), (10, 2802842), (14, 2002030), (19, 1475180), (20, 1401421), (28, 1001015), (35, 800812), (38, 737590), (41, 683620), (70, 400406), (76, 368795), (82, 341810), (95, 295036), (133, 210740), (140, 200203), (164, 170905), (190, 147518), (205, 136724), (257, 109060), (266, 105370), (287, 97660), (380, 73759), (410, 68362), (514, 54530), (532, 52685), (574, 48830), (665, 42148), (779, 35980), (820, 34181), (1028, 27265), (1148, 24415), (1285, 21812), (1330, 21074), (1435, 19532), (1558, 17990), (1799, 15580), (2570, 10906), (2660, 10537), (2870, 9766), (3116, 8995), (3598, 7790), (3895, 7196), (4883, 5740), (5140, 5453)]