21371600

素因数分解:

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

素因数の和:165

約数の個数: 90

約数和(自身を含む): 54206166

約数和(自身を除く): 32834566

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 100, 101, 115, 184, 200, 202, 230, 368, 400, 404, 460, 505, 529, 575, 808, 920, 1010, 1058, 1150, 1616, 1840, 2020, 2116, 2300, 2323, 2525, 2645, 4040, 4232, 4600, 4646, 5050, 5290, 8080, 8464, 9200, 9292, 10100, 10580, 11615, 13225, 18584, 20200, 21160, 23230, 26450, 37168, 40400, 42320, 46460, 52900, 53429, 58075, 92920, 105800, 106858, 116150, 185840, 211600, 213716, 232300, 267145, 427432, 464600, 534290, 854864, 929200, 1068580, 1335725, 2137160, 2671450, 4274320, 5342900, 10685800, 21371600]

約数ペア:

[(1, 21371600), (2, 10685800), (4, 5342900), (5, 4274320), (8, 2671450), (10, 2137160), (16, 1335725), (20, 1068580), (23, 929200), (25, 854864), (40, 534290), (46, 464600), (50, 427432), (80, 267145), (92, 232300), (100, 213716), (101, 211600), (115, 185840), (184, 116150), (200, 106858), (202, 105800), (230, 92920), (368, 58075), (400, 53429), (404, 52900), (460, 46460), (505, 42320), (529, 40400), (575, 37168), (808, 26450), (920, 23230), (1010, 21160), (1058, 20200), (1150, 18584), (1616, 13225), (1840, 11615), (2020, 10580), (2116, 10100), (2300, 9292), (2323, 9200), (2525, 8464), (2645, 8080), (4040, 5290), (4232, 5050), (4600, 4646)]