18164900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 43200360

約数和(自身を除く): 25035460

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 89, 100, 130, 157, 178, 260, 314, 325, 356, 445, 628, 650, 785, 890, 1157, 1300, 1570, 1780, 2041, 2225, 2314, 3140, 3925, 4082, 4450, 4628, 5785, 7850, 8164, 8900, 10205, 11570, 13973, 15700, 20410, 23140, 27946, 28925, 40820, 51025, 55892, 57850, 69865, 102050, 115700, 139730, 181649, 204100, 279460, 349325, 363298, 698650, 726596, 908245, 1397300, 1816490, 3632980, 4541225, 9082450, 18164900]

約数ペア:

[(1, 18164900), (2, 9082450), (4, 4541225), (5, 3632980), (10, 1816490), (13, 1397300), (20, 908245), (25, 726596), (26, 698650), (50, 363298), (52, 349325), (65, 279460), (89, 204100), (100, 181649), (130, 139730), (157, 115700), (178, 102050), (260, 69865), (314, 57850), (325, 55892), (356, 51025), (445, 40820), (628, 28925), (650, 27946), (785, 23140), (890, 20410), (1157, 15700), (1300, 13973), (1570, 11570), (1780, 10205), (2041, 8900), (2225, 8164), (2314, 7850), (3140, 5785), (3925, 4628), (4082, 4450)]