20955060

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16631}}^1$

素因数の和:16653

約数の個数: 72

約数和(自身を含む): 72648576

約数和(自身を除く): 51693516

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16631, 33262, 49893, 66524, 83155, 99786, 116417, 149679, 166310, 199572, 232834, 249465, 299358, 332620, 349251, 465668, 498930, 582085, 598716, 698502, 748395, 997860, 1047753, 1164170, 1397004, 1496790, 1746255, 2095506, 2328340, 2993580, 3492510, 4191012, 5238765, 6985020, 10477530, 20955060]

約数ペア:

[(1, 20955060), (2, 10477530), (3, 6985020), (4, 5238765), (5, 4191012), (6, 3492510), (7, 2993580), (9, 2328340), (10, 2095506), (12, 1746255), (14, 1496790), (15, 1397004), (18, 1164170), (20, 1047753), (21, 997860), (28, 748395), (30, 698502), (35, 598716), (36, 582085), (42, 498930), (45, 465668), (60, 349251), (63, 332620), (70, 299358), (84, 249465), (90, 232834), (105, 199572), (126, 166310), (140, 149679), (180, 116417), (210, 99786), (252, 83155), (315, 66524), (420, 49893), (630, 33262), (1260, 16631)]