19816940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{41}}^1$

素因数の和:100

約数の個数: 96

約数和(自身を含む): 50379840

約数和(自身を除く): 30562900

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 41, 44, 52, 55, 65, 82, 110, 130, 143, 164, 169, 205, 220, 260, 286, 338, 410, 451, 533, 572, 676, 715, 820, 845, 902, 1066, 1430, 1690, 1804, 1859, 2132, 2197, 2255, 2665, 2860, 3380, 3718, 4394, 4510, 5330, 5863, 6929, 7436, 8788, 9020, 9295, 10660, 10985, 11726, 13858, 18590, 21970, 23452, 24167, 27716, 29315, 34645, 37180, 43940, 48334, 58630, 69290, 76219, 90077, 96668, 117260, 120835, 138580, 152438, 180154, 241670, 304876, 360308, 381095, 450385, 483340, 762190, 900770, 990847, 1524380, 1801540, 1981694, 3963388, 4954235, 9908470, 19816940]

約数ペア:

[(1, 19816940), (2, 9908470), (4, 4954235), (5, 3963388), (10, 1981694), (11, 1801540), (13, 1524380), (20, 990847), (22, 900770), (26, 762190), (41, 483340), (44, 450385), (52, 381095), (55, 360308), (65, 304876), (82, 241670), (110, 180154), (130, 152438), (143, 138580), (164, 120835), (169, 117260), (205, 96668), (220, 90077), (260, 76219), (286, 69290), (338, 58630), (410, 48334), (451, 43940), (533, 37180), (572, 34645), (676, 29315), (715, 27716), (820, 24167), (845, 23452), (902, 21970), (1066, 18590), (1430, 13858), (1690, 11726), (1804, 10985), (1859, 10660), (2132, 9295), (2197, 9020), (2255, 8788), (2665, 7436), (2860, 6929), (3380, 5863), (3718, 5330), (4394, 4510)]