20677020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{541}}^1$

素因数の和:580

約数の個数: 144

約数和(自身を含む): 72662688

約数和(自身を除く): 51985668

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 541, 546, 588, 637, 735, 780, 910, 980, 1082, 1092, 1274, 1365, 1470, 1623, 1820, 1911, 2164, 2548, 2705, 2730, 2940, 3185, 3246, 3787, 3822, 5410, 5460, 6370, 6492, 7033, 7574, 7644, 8115, 9555, 10820, 11361, 12740, 14066, 15148, 16230, 18935, 19110, 21099, 22722, 26509, 28132, 32460, 35165, 37870, 38220, 42198, 45444, 49231, 53018, 56805, 70330, 75740, 79527, 84396, 98462, 105495, 106036, 113610, 132545, 140660, 147693, 159054, 196924, 210990, 227220, 246155, 265090, 295386, 318108, 344617, 397635, 421980, 492310, 530180, 590772, 689234, 738465, 795270, 984620, 1033851, 1378468, 1476930, 1590540, 1723085, 2067702, 2953860, 3446170, 4135404, 5169255, 6892340, 10338510, 20677020]

約数ペア:

[(1, 20677020), (2, 10338510), (3, 6892340), (4, 5169255), (5, 4135404), (6, 3446170), (7, 2953860), (10, 2067702), (12, 1723085), (13, 1590540), (14, 1476930), (15, 1378468), (20, 1033851), (21, 984620), (26, 795270), (28, 738465), (30, 689234), (35, 590772), (39, 530180), (42, 492310), (49, 421980), (52, 397635), (60, 344617), (65, 318108), (70, 295386), (78, 265090), (84, 246155), (91, 227220), (98, 210990), (105, 196924), (130, 159054), (140, 147693), (147, 140660), (156, 132545), (182, 113610), (195, 106036), (196, 105495), (210, 98462), (245, 84396), (260, 79527), (273, 75740), (294, 70330), (364, 56805), (390, 53018), (420, 49231), (455, 45444), (490, 42198), (541, 38220), (546, 37870), (588, 35165), (637, 32460), (735, 28132), (780, 26509), (910, 22722), (980, 21099), (1082, 19110), (1092, 18935), (1274, 16230), (1365, 15148), (1470, 14066), (1623, 12740), (1820, 11361), (1911, 10820), (2164, 9555), (2548, 8115), (2705, 7644), (2730, 7574), (2940, 7033), (3185, 6492), (3246, 6370), (3787, 5460), (3822, 5410)]