8980790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 20321280

約数和(自身を除く): 11340490

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 71, 91, 130, 139, 142, 182, 278, 355, 455, 497, 695, 710, 910, 923, 973, 994, 1390, 1807, 1846, 1946, 2485, 3614, 4615, 4865, 4970, 6461, 9035, 9230, 9730, 9869, 12649, 12922, 18070, 19738, 25298, 32305, 49345, 63245, 64610, 69083, 98690, 126490, 128297, 138166, 256594, 345415, 641485, 690830, 898079, 1282970, 1796158, 4490395, 8980790]

約数ペア:

[(1, 8980790), (2, 4490395), (5, 1796158), (7, 1282970), (10, 898079), (13, 690830), (14, 641485), (26, 345415), (35, 256594), (65, 138166), (70, 128297), (71, 126490), (91, 98690), (130, 69083), (139, 64610), (142, 63245), (182, 49345), (278, 32305), (355, 25298), (455, 19738), (497, 18070), (695, 12922), (710, 12649), (910, 9869), (923, 9730), (973, 9230), (994, 9035), (1390, 6461), (1807, 4970), (1846, 4865), (1946, 4615), (2485, 3614)]