28875860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:225

約数の個数: 96

約数和(自身を含む): 71124480

約数和(自身を除く): 42248620

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 47, 52, 65, 68, 85, 94, 130, 139, 170, 188, 221, 235, 260, 278, 340, 442, 470, 556, 611, 695, 799, 884, 940, 1105, 1222, 1390, 1598, 1807, 2210, 2363, 2444, 2780, 3055, 3196, 3614, 3995, 4420, 4726, 6110, 6533, 7228, 7990, 9035, 9452, 10387, 11815, 12220, 13066, 15980, 18070, 20774, 23630, 26132, 30719, 32665, 36140, 41548, 47260, 51935, 61438, 65330, 84929, 103870, 111061, 122876, 130660, 153595, 169858, 207740, 222122, 307190, 339716, 424645, 444244, 555305, 614380, 849290, 1110610, 1443793, 1698580, 2221220, 2887586, 5775172, 7218965, 14437930, 28875860]

約数ペア:

[(1, 28875860), (2, 14437930), (4, 7218965), (5, 5775172), (10, 2887586), (13, 2221220), (17, 1698580), (20, 1443793), (26, 1110610), (34, 849290), (47, 614380), (52, 555305), (65, 444244), (68, 424645), (85, 339716), (94, 307190), (130, 222122), (139, 207740), (170, 169858), (188, 153595), (221, 130660), (235, 122876), (260, 111061), (278, 103870), (340, 84929), (442, 65330), (470, 61438), (556, 51935), (611, 47260), (695, 41548), (799, 36140), (884, 32665), (940, 30719), (1105, 26132), (1222, 23630), (1390, 20774), (1598, 18070), (1807, 15980), (2210, 13066), (2363, 12220), (2444, 11815), (2780, 10387), (3055, 9452), (3196, 9035), (3614, 7990), (3995, 7228), (4420, 6533), (4726, 6110)]