18826990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1217}}^1$

素因数の和:1261

約数の個数: 64

約数和(自身を含む): 44198784

約数和(自身を除く): 25371794

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 26, 34, 35, 65, 70, 85, 91, 119, 130, 170, 182, 221, 238, 442, 455, 595, 910, 1105, 1190, 1217, 1547, 2210, 2434, 3094, 6085, 7735, 8519, 12170, 15470, 15821, 17038, 20689, 31642, 41378, 42595, 79105, 85190, 103445, 110747, 144823, 158210, 206890, 221494, 268957, 289646, 537914, 553735, 724115, 1107470, 1344785, 1448230, 1882699, 2689570, 3765398, 9413495, 18826990]

約数ペア:

[(1, 18826990), (2, 9413495), (5, 3765398), (7, 2689570), (10, 1882699), (13, 1448230), (14, 1344785), (17, 1107470), (26, 724115), (34, 553735), (35, 537914), (65, 289646), (70, 268957), (85, 221494), (91, 206890), (119, 158210), (130, 144823), (170, 110747), (182, 103445), (221, 85190), (238, 79105), (442, 42595), (455, 41378), (595, 31642), (910, 20689), (1105, 17038), (1190, 15821), (1217, 15470), (1547, 12170), (2210, 8519), (2434, 7735), (3094, 6085)]