21790440

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8647}}^1$

素因数の和:8671

約数の個数: 96

約数和(自身を含む): 80945280

約数和(自身を除く): 59154840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8647, 17294, 25941, 34588, 43235, 51882, 60529, 69176, 77823, 86470, 103764, 121058, 129705, 155646, 172940, 181587, 207528, 242116, 259410, 302645, 311292, 345880, 363174, 389115, 484232, 518820, 544761, 605290, 622584, 726348, 778230, 907935, 1037640, 1089522, 1210580, 1452696, 1556460, 1815870, 2179044, 2421160, 2723805, 3112920, 3631740, 4358088, 5447610, 7263480, 10895220, 21790440]

約数ペア:

[(1, 21790440), (2, 10895220), (3, 7263480), (4, 5447610), (5, 4358088), (6, 3631740), (7, 3112920), (8, 2723805), (9, 2421160), (10, 2179044), (12, 1815870), (14, 1556460), (15, 1452696), (18, 1210580), (20, 1089522), (21, 1037640), (24, 907935), (28, 778230), (30, 726348), (35, 622584), (36, 605290), (40, 544761), (42, 518820), (45, 484232), (56, 389115), (60, 363174), (63, 345880), (70, 311292), (72, 302645), (84, 259410), (90, 242116), (105, 207528), (120, 181587), (126, 172940), (140, 155646), (168, 129705), (180, 121058), (210, 103764), (252, 86470), (280, 77823), (315, 69176), (360, 60529), (420, 51882), (504, 43235), (630, 34588), (840, 25941), (1260, 17294), (2520, 8647)]