28450520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:217

約数の個数: 128

約数和(自身を含む): 79833600

約数和(自身を除く): 51383080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 43, 56, 68, 70, 85, 86, 119, 136, 139, 140, 170, 172, 215, 238, 278, 280, 301, 340, 344, 430, 476, 556, 595, 602, 680, 695, 731, 860, 952, 973, 1112, 1190, 1204, 1390, 1462, 1505, 1720, 1946, 2363, 2380, 2408, 2780, 2924, 3010, 3655, 3892, 4726, 4760, 4865, 5117, 5560, 5848, 5977, 6020, 7310, 7784, 9452, 9730, 10234, 11815, 11954, 12040, 14620, 16541, 18904, 19460, 20468, 23630, 23908, 25585, 29240, 29885, 33082, 38920, 40936, 41839, 47260, 47816, 51170, 59770, 66164, 82705, 83678, 94520, 101609, 102340, 119540, 132328, 165410, 167356, 203218, 204680, 209195, 239080, 330820, 334712, 406436, 418390, 508045, 661640, 711263, 812872, 836780, 1016090, 1422526, 1673560, 2032180, 2845052, 3556315, 4064360, 5690104, 7112630, 14225260, 28450520]

約数ペア:

[(1, 28450520), (2, 14225260), (4, 7112630), (5, 5690104), (7, 4064360), (8, 3556315), (10, 2845052), (14, 2032180), (17, 1673560), (20, 1422526), (28, 1016090), (34, 836780), (35, 812872), (40, 711263), (43, 661640), (56, 508045), (68, 418390), (70, 406436), (85, 334712), (86, 330820), (119, 239080), (136, 209195), (139, 204680), (140, 203218), (170, 167356), (172, 165410), (215, 132328), (238, 119540), (278, 102340), (280, 101609), (301, 94520), (340, 83678), (344, 82705), (430, 66164), (476, 59770), (556, 51170), (595, 47816), (602, 47260), (680, 41839), (695, 40936), (731, 38920), (860, 33082), (952, 29885), (973, 29240), (1112, 25585), (1190, 23908), (1204, 23630), (1390, 20468), (1462, 19460), (1505, 18904), (1720, 16541), (1946, 14620), (2363, 12040), (2380, 11954), (2408, 11815), (2780, 10234), (2924, 9730), (3010, 9452), (3655, 7784), (3892, 7310), (4726, 6020), (4760, 5977), (4865, 5848), (5117, 5560)]