19967860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:337

約数の個数: 96

約数和(自身を含む): 51166080

約数和(自身を除く): 31198220

約数列:

[1, 2, 4, 5, 10, 11, 17, 19, 20, 22, 34, 38, 44, 55, 68, 76, 85, 95, 110, 170, 187, 190, 209, 220, 281, 323, 340, 374, 380, 418, 562, 646, 748, 836, 935, 1045, 1124, 1292, 1405, 1615, 1870, 2090, 2810, 3091, 3230, 3553, 3740, 4180, 4777, 5339, 5620, 6182, 6460, 7106, 9554, 10678, 12364, 14212, 15455, 17765, 19108, 21356, 23885, 26695, 30910, 35530, 47770, 52547, 53390, 58729, 61820, 71060, 90763, 95540, 105094, 106780, 117458, 181526, 210188, 234916, 262735, 293645, 363052, 453815, 525470, 587290, 907630, 998393, 1050940, 1174580, 1815260, 1996786, 3993572, 4991965, 9983930, 19967860]

約数ペア:

[(1, 19967860), (2, 9983930), (4, 4991965), (5, 3993572), (10, 1996786), (11, 1815260), (17, 1174580), (19, 1050940), (20, 998393), (22, 907630), (34, 587290), (38, 525470), (44, 453815), (55, 363052), (68, 293645), (76, 262735), (85, 234916), (95, 210188), (110, 181526), (170, 117458), (187, 106780), (190, 105094), (209, 95540), (220, 90763), (281, 71060), (323, 61820), (340, 58729), (374, 53390), (380, 52547), (418, 47770), (562, 35530), (646, 30910), (748, 26695), (836, 23885), (935, 21356), (1045, 19108), (1124, 17765), (1292, 15455), (1405, 14212), (1615, 12364), (1870, 10678), (2090, 9554), (2810, 7106), (3091, 6460), (3230, 6182), (3553, 5620), (3740, 5339), (4180, 4777)]