1990457955

素因数分解:

$3^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{701}}^1$

素因数の和:784

約数の個数: 112

約数和(自身を含む): 3867121440

約数和(自身を除く): 1876663485

約数列:

[1, 3, 5, 9, 15, 19, 27, 41, 45, 57, 81, 95, 123, 135, 171, 205, 243, 285, 369, 405, 513, 615, 701, 729, 779, 855, 1107, 1215, 1539, 1845, 2103, 2337, 2565, 3321, 3505, 3645, 3895, 4617, 5535, 6309, 7011, 7695, 9963, 10515, 11685, 13319, 13851, 16605, 18927, 21033, 23085, 28741, 29889, 31545, 35055, 39957, 49815, 56781, 63099, 66595, 69255, 86223, 94635, 105165, 119871, 143705, 149445, 170343, 189297, 199785, 258669, 283905, 315495, 359613, 431115, 511029, 546079, 567891, 599355, 776007, 851715, 946485, 1078839, 1293345, 1638237, 1798065, 2328021, 2555145, 2730395, 2839455, 3236517, 3880035, 4914711, 5394195, 6984063, 8191185, 9709551, 11640105, 14744133, 16182585, 20952189, 24573555, 34920315, 44232399, 48547755, 73720665, 104760945, 132697197, 221161995, 398091591, 663485985, 1990457955]

約数ペア:

[(1, 1990457955), (3, 663485985), (5, 398091591), (9, 221161995), (15, 132697197), (19, 104760945), (27, 73720665), (41, 48547755), (45, 44232399), (57, 34920315), (81, 24573555), (95, 20952189), (123, 16182585), (135, 14744133), (171, 11640105), (205, 9709551), (243, 8191185), (285, 6984063), (369, 5394195), (405, 4914711), (513, 3880035), (615, 3236517), (701, 2839455), (729, 2730395), (779, 2555145), (855, 2328021), (1107, 1798065), (1215, 1638237), (1539, 1293345), (1845, 1078839), (2103, 946485), (2337, 851715), (2565, 776007), (3321, 599355), (3505, 567891), (3645, 546079), (3895, 511029), (4617, 431115), (5535, 359613), (6309, 315495), (7011, 283905), (7695, 258669), (9963, 199785), (10515, 189297), (11685, 170343), (13319, 149445), (13851, 143705), (16605, 119871), (18927, 105165), (21033, 94635), (23085, 86223), (28741, 69255), (29889, 66595), (31545, 63099), (35055, 56781), (39957, 49815)]