20172835420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{487}}^1\times {\mathrm{1787}}^1$

素因数の和:2363

約数の個数: 96

約数和(自身を含む): 45442091520

約数和(自身を除く): 25269256100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 487, 610, 974, 1159, 1220, 1787, 1948, 2318, 2435, 3574, 4636, 4870, 5795, 7148, 8935, 9253, 9740, 11590, 17870, 18506, 23180, 29707, 33953, 35740, 37012, 46265, 59414, 67906, 92530, 109007, 118828, 135812, 148535, 169765, 185060, 218014, 297070, 339530, 436028, 545035, 564433, 594140, 679060, 870269, 1090070, 1128866, 1740538, 2071133, 2180140, 2257732, 2822165, 3481076, 4142266, 4351345, 5644330, 8284532, 8702690, 10355665, 11288660, 16535111, 17405380, 20711330, 33070222, 41422660, 53086409, 66140444, 82675555, 106172818, 165351110, 212345636, 265432045, 330702220, 530864090, 1008641771, 1061728180, 2017283542, 4034567084, 5043208855, 10086417710, 20172835420]

約数ペア:

[(1, 20172835420), (2, 10086417710), (4, 5043208855), (5, 4034567084), (10, 2017283542), (19, 1061728180), (20, 1008641771), (38, 530864090), (61, 330702220), (76, 265432045), (95, 212345636), (122, 165351110), (190, 106172818), (244, 82675555), (305, 66140444), (380, 53086409), (487, 41422660), (610, 33070222), (974, 20711330), (1159, 17405380), (1220, 16535111), (1787, 11288660), (1948, 10355665), (2318, 8702690), (2435, 8284532), (3574, 5644330), (4636, 4351345), (4870, 4142266), (5795, 3481076), (7148, 2822165), (8935, 2257732), (9253, 2180140), (9740, 2071133), (11590, 1740538), (17870, 1128866), (18506, 1090070), (23180, 870269), (29707, 679060), (33953, 594140), (35740, 564433), (37012, 545035), (46265, 436028), (59414, 339530), (67906, 297070), (92530, 218014), (109007, 185060), (118828, 169765), (135812, 148535)]