20985510

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7687}}^1$

素因数の和:7717

約数の個数: 64

約数和(自身を含む): 61996032

約数和(自身を除く): 41010522

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 35, 39, 42, 65, 70, 78, 91, 105, 130, 182, 195, 210, 273, 390, 455, 546, 910, 1365, 2730, 7687, 15374, 23061, 38435, 46122, 53809, 76870, 99931, 107618, 115305, 161427, 199862, 230610, 269045, 299793, 322854, 499655, 538090, 599586, 699517, 807135, 999310, 1399034, 1498965, 1614270, 2098551, 2997930, 3497585, 4197102, 6995170, 10492755, 20985510]

約数ペア:

[(1, 20985510), (2, 10492755), (3, 6995170), (5, 4197102), (6, 3497585), (7, 2997930), (10, 2098551), (13, 1614270), (14, 1498965), (15, 1399034), (21, 999310), (26, 807135), (30, 699517), (35, 599586), (39, 538090), (42, 499655), (65, 322854), (70, 299793), (78, 269045), (91, 230610), (105, 199862), (130, 161427), (182, 115305), (195, 107618), (210, 99931), (273, 76870), (390, 53809), (455, 46122), (546, 38435), (910, 23061), (1365, 15374), (2730, 7687)]