20671980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{593}}^1$

素因数の和:695

約数の個数: 96

約数和(自身を含む): 67060224

約数和(自身を除く): 46388244

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 83, 84, 105, 140, 166, 210, 249, 332, 415, 420, 498, 581, 593, 830, 996, 1162, 1186, 1245, 1660, 1743, 1779, 2324, 2372, 2490, 2905, 2965, 3486, 3558, 4151, 4980, 5810, 5930, 6972, 7116, 8302, 8715, 8895, 11620, 11860, 12453, 16604, 17430, 17790, 20755, 24906, 34860, 35580, 41510, 49219, 49812, 62265, 83020, 98438, 124530, 147657, 196876, 246095, 249060, 295314, 344533, 492190, 590628, 689066, 738285, 984380, 1033599, 1378132, 1476570, 1722665, 2067198, 2953140, 3445330, 4134396, 5167995, 6890660, 10335990, 20671980]

約数ペア:

[(1, 20671980), (2, 10335990), (3, 6890660), (4, 5167995), (5, 4134396), (6, 3445330), (7, 2953140), (10, 2067198), (12, 1722665), (14, 1476570), (15, 1378132), (20, 1033599), (21, 984380), (28, 738285), (30, 689066), (35, 590628), (42, 492190), (60, 344533), (70, 295314), (83, 249060), (84, 246095), (105, 196876), (140, 147657), (166, 124530), (210, 98438), (249, 83020), (332, 62265), (415, 49812), (420, 49219), (498, 41510), (581, 35580), (593, 34860), (830, 24906), (996, 20755), (1162, 17790), (1186, 17430), (1245, 16604), (1660, 12453), (1743, 11860), (1779, 11620), (2324, 8895), (2372, 8715), (2490, 8302), (2905, 7116), (2965, 6972), (3486, 5930), (3558, 5810), (4151, 4980)]