638562428

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{337}}^1$

素因数の和:475

約数の個数: 96

約数和(自身を含む): 1380986880

約数和(自身を除く): 742424452

約数列:

[1, 2, 4, 7, 14, 28, 31, 37, 59, 62, 74, 118, 124, 148, 217, 236, 259, 337, 413, 434, 518, 674, 826, 868, 1036, 1147, 1348, 1652, 1829, 2183, 2294, 2359, 3658, 4366, 4588, 4718, 7316, 8029, 8732, 9436, 10447, 12469, 12803, 15281, 16058, 19883, 20894, 24938, 25606, 30562, 32116, 39766, 41788, 49876, 51212, 61124, 67673, 73129, 79532, 87283, 135346, 139181, 146258, 174566, 270692, 278362, 292516, 349132, 386539, 473711, 556724, 616373, 735671, 773078, 947422, 1232746, 1471342, 1546156, 1894844, 2465492, 2705773, 2942684, 4314611, 5149697, 5411546, 8629222, 10299394, 10823092, 17258444, 20598788, 22805801, 45611602, 91223204, 159640607, 319281214, 638562428]

約数ペア:

[(1, 638562428), (2, 319281214), (4, 159640607), (7, 91223204), (14, 45611602), (28, 22805801), (31, 20598788), (37, 17258444), (59, 10823092), (62, 10299394), (74, 8629222), (118, 5411546), (124, 5149697), (148, 4314611), (217, 2942684), (236, 2705773), (259, 2465492), (337, 1894844), (413, 1546156), (434, 1471342), (518, 1232746), (674, 947422), (826, 773078), (868, 735671), (1036, 616373), (1147, 556724), (1348, 473711), (1652, 386539), (1829, 349132), (2183, 292516), (2294, 278362), (2359, 270692), (3658, 174566), (4366, 146258), (4588, 139181), (4718, 135346), (7316, 87283), (8029, 79532), (8732, 73129), (9436, 67673), (10447, 61124), (12469, 51212), (12803, 49876), (15281, 41788), (16058, 39766), (19883, 32116), (20894, 30562), (24938, 25606)]