19805600

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{1303}}^1$

素因数の和:1342

約数の個数: 72

約数和(自身を含む): 50934240

約数和(自身を除く): 31128640

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 152, 160, 190, 200, 304, 380, 400, 475, 608, 760, 800, 950, 1303, 1520, 1900, 2606, 3040, 3800, 5212, 6515, 7600, 10424, 13030, 15200, 20848, 24757, 26060, 32575, 41696, 49514, 52120, 65150, 99028, 104240, 123785, 130300, 198056, 208480, 247570, 260600, 396112, 495140, 521200, 618925, 792224, 990280, 1042400, 1237850, 1980560, 2475700, 3961120, 4951400, 9902800, 19805600]

約数ペア:

[(1, 19805600), (2, 9902800), (4, 4951400), (5, 3961120), (8, 2475700), (10, 1980560), (16, 1237850), (19, 1042400), (20, 990280), (25, 792224), (32, 618925), (38, 521200), (40, 495140), (50, 396112), (76, 260600), (80, 247570), (95, 208480), (100, 198056), (152, 130300), (160, 123785), (190, 104240), (200, 99028), (304, 65150), (380, 52120), (400, 49514), (475, 41696), (608, 32575), (760, 26060), (800, 24757), (950, 20848), (1303, 15200), (1520, 13030), (1900, 10424), (2606, 7600), (3040, 6515), (3800, 5212)]