20740005

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{293}}^1$

素因数の和:339

約数の個数: 72

約数和(自身を含む): 42699384

約数和(自身を除く): 21959379

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 121, 143, 165, 195, 293, 363, 429, 495, 585, 605, 715, 879, 1089, 1287, 1465, 1573, 1815, 2145, 2637, 3223, 3809, 4395, 4719, 5445, 6435, 7865, 9669, 11427, 13185, 14157, 16115, 19045, 23595, 29007, 34281, 35453, 41899, 48345, 57135, 70785, 106359, 125697, 145035, 171405, 177265, 209495, 319077, 377091, 460889, 531795, 628485, 1382667, 1595385, 1885455, 2304445, 4148001, 6913335, 20740005]

約数ペア:

[(1, 20740005), (3, 6913335), (5, 4148001), (9, 2304445), (11, 1885455), (13, 1595385), (15, 1382667), (33, 628485), (39, 531795), (45, 460889), (55, 377091), (65, 319077), (99, 209495), (117, 177265), (121, 171405), (143, 145035), (165, 125697), (195, 106359), (293, 70785), (363, 57135), (429, 48345), (495, 41899), (585, 35453), (605, 34281), (715, 29007), (879, 23595), (1089, 19045), (1287, 16115), (1465, 14157), (1573, 13185), (1815, 11427), (2145, 9669), (2637, 7865), (3223, 6435), (3809, 5445), (4395, 4719)]