291788900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{577}}^1$

素因数の和:993

約数の個数: 72

約数和(自身を含む): 684825960

約数和(自身を除く): 393037060

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 389, 577, 650, 778, 1154, 1300, 1556, 1945, 2308, 2885, 3890, 5057, 5770, 7501, 7780, 9725, 10114, 11540, 14425, 15002, 19450, 20228, 25285, 28850, 30004, 37505, 38900, 50570, 57700, 75010, 101140, 126425, 150020, 187525, 224453, 252850, 375050, 448906, 505700, 750100, 897812, 1122265, 2244530, 2917889, 4489060, 5611325, 5835778, 11222650, 11671556, 14589445, 22445300, 29178890, 58357780, 72947225, 145894450, 291788900]

約数ペア:

[(1, 291788900), (2, 145894450), (4, 72947225), (5, 58357780), (10, 29178890), (13, 22445300), (20, 14589445), (25, 11671556), (26, 11222650), (50, 5835778), (52, 5611325), (65, 4489060), (100, 2917889), (130, 2244530), (260, 1122265), (325, 897812), (389, 750100), (577, 505700), (650, 448906), (778, 375050), (1154, 252850), (1300, 224453), (1556, 187525), (1945, 150020), (2308, 126425), (2885, 101140), (3890, 75010), (5057, 57700), (5770, 50570), (7501, 38900), (7780, 37505), (9725, 30004), (10114, 28850), (11540, 25285), (14425, 20228), (15002, 19450)]