21437600

素因数分解:

$2^5\times 5^2\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:358

約数の個数: 72

約数和(自身を含む): 52996608

約数和(自身を除く): 31559008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 127, 160, 200, 211, 254, 400, 422, 508, 635, 800, 844, 1016, 1055, 1270, 1688, 2032, 2110, 2540, 3175, 3376, 4064, 4220, 5080, 5275, 6350, 6752, 8440, 10160, 10550, 12700, 16880, 20320, 21100, 25400, 26797, 33760, 42200, 50800, 53594, 84400, 101600, 107188, 133985, 168800, 214376, 267970, 428752, 535940, 669925, 857504, 1071880, 1339850, 2143760, 2679700, 4287520, 5359400, 10718800, 21437600]

約数ペア:

[(1, 21437600), (2, 10718800), (4, 5359400), (5, 4287520), (8, 2679700), (10, 2143760), (16, 1339850), (20, 1071880), (25, 857504), (32, 669925), (40, 535940), (50, 428752), (80, 267970), (100, 214376), (127, 168800), (160, 133985), (200, 107188), (211, 101600), (254, 84400), (400, 53594), (422, 50800), (508, 42200), (635, 33760), (800, 26797), (844, 25400), (1016, 21100), (1055, 20320), (1270, 16880), (1688, 12700), (2032, 10550), (2110, 10160), (2540, 8440), (3175, 6752), (3376, 6350), (4064, 5275), (4220, 5080)]