21875140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1$

素因数の和:197

約数の個数: 96

約数和(自身を含む): 55770624

約数和(自身を除く): 33895484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 41, 70, 74, 82, 103, 140, 148, 164, 185, 205, 206, 259, 287, 370, 410, 412, 515, 518, 574, 721, 740, 820, 1030, 1036, 1148, 1295, 1435, 1442, 1517, 2060, 2590, 2870, 2884, 3034, 3605, 3811, 4223, 5180, 5740, 6068, 7210, 7585, 7622, 8446, 10619, 14420, 15170, 15244, 16892, 19055, 21115, 21238, 26677, 29561, 30340, 38110, 42230, 42476, 53095, 53354, 59122, 76220, 84460, 106190, 106708, 118244, 133385, 147805, 156251, 212380, 266770, 295610, 312502, 533540, 591220, 625004, 781255, 1093757, 1562510, 2187514, 3125020, 4375028, 5468785, 10937570, 21875140]

約数ペア:

[(1, 21875140), (2, 10937570), (4, 5468785), (5, 4375028), (7, 3125020), (10, 2187514), (14, 1562510), (20, 1093757), (28, 781255), (35, 625004), (37, 591220), (41, 533540), (70, 312502), (74, 295610), (82, 266770), (103, 212380), (140, 156251), (148, 147805), (164, 133385), (185, 118244), (205, 106708), (206, 106190), (259, 84460), (287, 76220), (370, 59122), (410, 53354), (412, 53095), (515, 42476), (518, 42230), (574, 38110), (721, 30340), (740, 29561), (820, 26677), (1030, 21238), (1036, 21115), (1148, 19055), (1295, 16892), (1435, 15244), (1442, 15170), (1517, 14420), (2060, 10619), (2590, 8446), (2870, 7622), (2884, 7585), (3034, 7210), (3605, 6068), (3811, 5740), (4223, 5180)]