20193705

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1$

素因数の和:460

約数の個数: 80

約数和(自身を含む): 43908480

約数和(自身を除く): 23714775

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 51, 63, 81, 85, 105, 119, 135, 153, 189, 255, 315, 357, 405, 419, 459, 567, 595, 765, 945, 1071, 1257, 1377, 1785, 2095, 2295, 2835, 2933, 3213, 3771, 5355, 6285, 6885, 7123, 8799, 9639, 11313, 14665, 16065, 18855, 21369, 26397, 33939, 35615, 43995, 48195, 49861, 56565, 64107, 79191, 106845, 131985, 149583, 169695, 192321, 237573, 249305, 320535, 395955, 448749, 576963, 747915, 961605, 1187865, 1346247, 2243745, 2884815, 4038741, 6731235, 20193705]

約数ペア:

[(1, 20193705), (3, 6731235), (5, 4038741), (7, 2884815), (9, 2243745), (15, 1346247), (17, 1187865), (21, 961605), (27, 747915), (35, 576963), (45, 448749), (51, 395955), (63, 320535), (81, 249305), (85, 237573), (105, 192321), (119, 169695), (135, 149583), (153, 131985), (189, 106845), (255, 79191), (315, 64107), (357, 56565), (405, 49861), (419, 48195), (459, 43995), (567, 35615), (595, 33939), (765, 26397), (945, 21369), (1071, 18855), (1257, 16065), (1377, 14665), (1785, 11313), (2095, 9639), (2295, 8799), (2835, 7123), (2933, 6885), (3213, 6285), (3771, 5355)]