81667700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{811}}^1$

素因数の和:897

約数の個数: 72

約数和(自身を含む): 190300320

約数和(自身を除く): 108632620

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 53, 76, 95, 100, 106, 190, 212, 265, 380, 475, 530, 811, 950, 1007, 1060, 1325, 1622, 1900, 2014, 2650, 3244, 4028, 4055, 5035, 5300, 8110, 10070, 15409, 16220, 20140, 20275, 25175, 30818, 40550, 42983, 50350, 61636, 77045, 81100, 85966, 100700, 154090, 171932, 214915, 308180, 385225, 429830, 770450, 816677, 859660, 1074575, 1540900, 1633354, 2149150, 3266708, 4083385, 4298300, 8166770, 16333540, 20416925, 40833850, 81667700]

約数ペア:

[(1, 81667700), (2, 40833850), (4, 20416925), (5, 16333540), (10, 8166770), (19, 4298300), (20, 4083385), (25, 3266708), (38, 2149150), (50, 1633354), (53, 1540900), (76, 1074575), (95, 859660), (100, 816677), (106, 770450), (190, 429830), (212, 385225), (265, 308180), (380, 214915), (475, 171932), (530, 154090), (811, 100700), (950, 85966), (1007, 81100), (1060, 77045), (1325, 61636), (1622, 50350), (1900, 42983), (2014, 40550), (2650, 30818), (3244, 25175), (4028, 20275), (4055, 20140), (5035, 16220), (5300, 15409), (8110, 10070)]