81491800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^2\times {\mathrm{2411}}^1$

素因数の和:2453

約数の個数: 72

約数和(自身を含む): 205249140

約数和(自身を除く): 123757340

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 169, 200, 260, 325, 338, 520, 650, 676, 845, 1300, 1352, 1690, 2411, 2600, 3380, 4225, 4822, 6760, 8450, 9644, 12055, 16900, 19288, 24110, 31343, 33800, 48220, 60275, 62686, 96440, 120550, 125372, 156715, 241100, 250744, 313430, 407459, 482200, 626860, 783575, 814918, 1253720, 1567150, 1629836, 2037295, 3134300, 3259672, 4074590, 6268600, 8149180, 10186475, 16298360, 20372950, 40745900, 81491800]

約数ペア:

[(1, 81491800), (2, 40745900), (4, 20372950), (5, 16298360), (8, 10186475), (10, 8149180), (13, 6268600), (20, 4074590), (25, 3259672), (26, 3134300), (40, 2037295), (50, 1629836), (52, 1567150), (65, 1253720), (100, 814918), (104, 783575), (130, 626860), (169, 482200), (200, 407459), (260, 313430), (325, 250744), (338, 241100), (520, 156715), (650, 125372), (676, 120550), (845, 96440), (1300, 62686), (1352, 60275), (1690, 48220), (2411, 33800), (2600, 31343), (3380, 24110), (4225, 19288), (4822, 16900), (6760, 12055), (8450, 9644)]