31261100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:339

約数の個数: 72

約数和(自身を含む): 74005680

約数和(自身を除く): 42744580

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 139, 173, 260, 278, 325, 346, 556, 650, 692, 695, 865, 1300, 1390, 1730, 1807, 2249, 2780, 3460, 3475, 3614, 4325, 4498, 6950, 7228, 8650, 8996, 9035, 11245, 13900, 17300, 18070, 22490, 24047, 36140, 44980, 45175, 48094, 56225, 90350, 96188, 112450, 120235, 180700, 224900, 240470, 312611, 480940, 601175, 625222, 1202350, 1250444, 1563055, 2404700, 3126110, 6252220, 7815275, 15630550, 31261100]

約数ペア:

[(1, 31261100), (2, 15630550), (4, 7815275), (5, 6252220), (10, 3126110), (13, 2404700), (20, 1563055), (25, 1250444), (26, 1202350), (50, 625222), (52, 601175), (65, 480940), (100, 312611), (130, 240470), (139, 224900), (173, 180700), (260, 120235), (278, 112450), (325, 96188), (346, 90350), (556, 56225), (650, 48094), (692, 45175), (695, 44980), (865, 36140), (1300, 24047), (1390, 22490), (1730, 18070), (1807, 17300), (2249, 13900), (2780, 11245), (3460, 9035), (3475, 8996), (3614, 8650), (4325, 7228), (4498, 6950)]