81021500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{3307}}^1$

素因数の和:3340

約数の個数: 72

約数和(自身を含む): 205903152

約数和(自身を除く): 124881652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 125, 140, 175, 196, 245, 250, 350, 490, 500, 700, 875, 980, 1225, 1750, 2450, 3307, 3500, 4900, 6125, 6614, 12250, 13228, 16535, 23149, 24500, 33070, 46298, 66140, 82675, 92596, 115745, 162043, 165350, 231490, 324086, 330700, 413375, 462980, 578725, 648172, 810215, 826750, 1157450, 1620430, 1653500, 2314900, 2893625, 3240860, 4051075, 5787250, 8102150, 11574500, 16204300, 20255375, 40510750, 81021500]

約数ペア:

[(1, 81021500), (2, 40510750), (4, 20255375), (5, 16204300), (7, 11574500), (10, 8102150), (14, 5787250), (20, 4051075), (25, 3240860), (28, 2893625), (35, 2314900), (49, 1653500), (50, 1620430), (70, 1157450), (98, 826750), (100, 810215), (125, 648172), (140, 578725), (175, 462980), (196, 413375), (245, 330700), (250, 324086), (350, 231490), (490, 165350), (500, 162043), (700, 115745), (875, 92596), (980, 82675), (1225, 66140), (1750, 46298), (2450, 33070), (3307, 24500), (3500, 23149), (4900, 16535), (6125, 13228), (6614, 12250)]