399804916

素因数分解:

$2^2\times 7^5\times {\mathrm{19}}^1\times {\mathrm{313}}^1$

素因数の和:371

約数の個数: 72

約数和(自身を含む): 861967680

約数和(自身を除く): 462162764

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 313, 343, 532, 626, 686, 931, 1252, 1372, 1862, 2191, 2401, 3724, 4382, 4802, 5947, 6517, 8764, 9604, 11894, 13034, 15337, 16807, 23788, 26068, 30674, 33614, 41629, 45619, 61348, 67228, 83258, 91238, 107359, 166516, 182476, 214718, 291403, 319333, 429436, 582806, 638666, 751513, 1165612, 1277332, 1503026, 2039821, 3006052, 4079642, 5260591, 8159284, 10521182, 14278747, 21042364, 28557494, 57114988, 99951229, 199902458, 399804916]

約数ペア:

[(1, 399804916), (2, 199902458), (4, 99951229), (7, 57114988), (14, 28557494), (19, 21042364), (28, 14278747), (38, 10521182), (49, 8159284), (76, 5260591), (98, 4079642), (133, 3006052), (196, 2039821), (266, 1503026), (313, 1277332), (343, 1165612), (532, 751513), (626, 638666), (686, 582806), (931, 429436), (1252, 319333), (1372, 291403), (1862, 214718), (2191, 182476), (2401, 166516), (3724, 107359), (4382, 91238), (4802, 83258), (5947, 67228), (6517, 61348), (8764, 45619), (9604, 41629), (11894, 33614), (13034, 30674), (15337, 26068), (16807, 23788)]