81078700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{307}}^1$

素因数の和:479

約数の個数: 72

約数和(自身を含む): 187140800

約数和(自身を除く): 106062100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 139, 190, 278, 307, 380, 475, 556, 614, 695, 950, 1228, 1390, 1535, 1900, 2641, 2780, 3070, 3475, 5282, 5833, 6140, 6950, 7675, 10564, 11666, 13205, 13900, 15350, 23332, 26410, 29165, 30700, 42673, 52820, 58330, 66025, 85346, 116660, 132050, 145825, 170692, 213365, 264100, 291650, 426730, 583300, 810787, 853460, 1066825, 1621574, 2133650, 3243148, 4053935, 4267300, 8107870, 16215740, 20269675, 40539350, 81078700]

約数ペア:

[(1, 81078700), (2, 40539350), (4, 20269675), (5, 16215740), (10, 8107870), (19, 4267300), (20, 4053935), (25, 3243148), (38, 2133650), (50, 1621574), (76, 1066825), (95, 853460), (100, 810787), (139, 583300), (190, 426730), (278, 291650), (307, 264100), (380, 213365), (475, 170692), (556, 145825), (614, 132050), (695, 116660), (950, 85346), (1228, 66025), (1390, 58330), (1535, 52820), (1900, 42673), (2641, 30700), (2780, 29165), (3070, 26410), (3475, 23332), (5282, 15350), (5833, 13900), (6140, 13205), (6950, 11666), (7675, 10564)]