20709944

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 43740000

約数和(自身を除く): 23030056

約数列:

[1, 2, 4, 8, 17, 29, 34, 58, 59, 68, 89, 116, 118, 136, 178, 232, 236, 356, 472, 493, 712, 986, 1003, 1513, 1711, 1972, 2006, 2581, 3026, 3422, 3944, 4012, 5162, 5251, 6052, 6844, 8024, 10324, 10502, 12104, 13688, 20648, 21004, 29087, 42008, 43877, 58174, 87754, 89267, 116348, 152279, 175508, 178534, 232696, 304558, 351016, 357068, 609116, 714136, 1218232, 2588743, 5177486, 10354972, 20709944]

約数ペア:

[(1, 20709944), (2, 10354972), (4, 5177486), (8, 2588743), (17, 1218232), (29, 714136), (34, 609116), (58, 357068), (59, 351016), (68, 304558), (89, 232696), (116, 178534), (118, 175508), (136, 152279), (178, 116348), (232, 89267), (236, 87754), (356, 58174), (472, 43877), (493, 42008), (712, 29087), (986, 21004), (1003, 20648), (1513, 13688), (1711, 12104), (1972, 10502), (2006, 10324), (2581, 8024), (3026, 6844), (3422, 6052), (3944, 5251), (4012, 5162)]