19884880

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:244

約数の個数: 80

約数和(自身を含む): 49175424

約数和(自身を除く): 29290544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 101, 107, 115, 184, 202, 214, 230, 368, 404, 428, 460, 505, 535, 808, 856, 920, 1010, 1070, 1616, 1712, 1840, 2020, 2140, 2323, 2461, 4040, 4280, 4646, 4922, 8080, 8560, 9292, 9844, 10807, 11615, 12305, 18584, 19688, 21614, 23230, 24610, 37168, 39376, 43228, 46460, 49220, 54035, 86456, 92920, 98440, 108070, 172912, 185840, 196880, 216140, 248561, 432280, 497122, 864560, 994244, 1242805, 1988488, 2485610, 3976976, 4971220, 9942440, 19884880]

約数ペア:

[(1, 19884880), (2, 9942440), (4, 4971220), (5, 3976976), (8, 2485610), (10, 1988488), (16, 1242805), (20, 994244), (23, 864560), (40, 497122), (46, 432280), (80, 248561), (92, 216140), (101, 196880), (107, 185840), (115, 172912), (184, 108070), (202, 98440), (214, 92920), (230, 86456), (368, 54035), (404, 49220), (428, 46460), (460, 43228), (505, 39376), (535, 37168), (808, 24610), (856, 23230), (920, 21614), (1010, 19688), (1070, 18584), (1616, 12305), (1712, 11615), (1840, 10807), (2020, 9844), (2140, 9292), (2323, 8560), (2461, 8080), (4040, 4922), (4280, 4646)]