57181820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{307}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 123150720

約数和(自身を除く): 65968900

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 139, 268, 278, 307, 335, 556, 614, 670, 695, 1228, 1340, 1390, 1535, 2780, 3070, 6140, 9313, 18626, 20569, 37252, 41138, 42673, 46565, 82276, 85346, 93130, 102845, 170692, 186260, 205690, 213365, 411380, 426730, 853460, 2859091, 5718182, 11436364, 14295455, 28590910, 57181820]

約数ペア:

[(1, 57181820), (2, 28590910), (4, 14295455), (5, 11436364), (10, 5718182), (20, 2859091), (67, 853460), (134, 426730), (139, 411380), (268, 213365), (278, 205690), (307, 186260), (335, 170692), (556, 102845), (614, 93130), (670, 85346), (695, 82276), (1228, 46565), (1340, 42673), (1390, 41138), (1535, 37252), (2780, 20569), (3070, 18626), (6140, 9313)]