20865213180

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16559693}}^1$

素因数の和:16559715

約数の個数: 72

約数和(自身を含む): 72332743392

約数和(自身を除く): 51467530212

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, 16559693, 33119386, 49679079, 66238772, 82798465, 99358158, 115917851, 149037237, 165596930, 198716316, 231835702, 248395395, 298074474, 331193860, 347753553, 463671404, 496790790, 579589255, 596148948, 695507106, 745186185, 993581580, 1043260659, 1159178510, 1391014212, 1490372370, 1738767765, 2086521318, 2318357020, 2980744740, 3477535530, 4173042636, 5216303295, 6955071060, 10432606590, 20865213180]

約数ペア:

[(1, 20865213180), (2, 10432606590), (3, 6955071060), (4, 5216303295), (5, 4173042636), (6, 3477535530), (7, 2980744740), (9, 2318357020), (10, 2086521318), (12, 1738767765), (14, 1490372370), (15, 1391014212), (18, 1159178510), (20, 1043260659), (21, 993581580), (28, 745186185), (30, 695507106), (35, 596148948), (36, 579589255), (42, 496790790), (45, 463671404), (60, 347753553), (63, 331193860), (70, 298074474), (84, 248395395), (90, 231835702), (105, 198716316), (126, 165596930), (140, 149037237), (180, 115917851), (210, 99358158), (252, 82798465), (315, 66238772), (420, 49679079), (630, 33119386), (1260, 16559693)]