18938000

素因数分解:

$2^4\times 5^3\times {\mathrm{17}}^1\times {\mathrm{557}}^1$

素因数の和:597

約数の個数: 80

約数和(自身を含む): 48572784

約数和(自身を除く): 29634784

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 125, 136, 170, 200, 250, 272, 340, 400, 425, 500, 557, 680, 850, 1000, 1114, 1360, 1700, 2000, 2125, 2228, 2785, 3400, 4250, 4456, 5570, 6800, 8500, 8912, 9469, 11140, 13925, 17000, 18938, 22280, 27850, 34000, 37876, 44560, 47345, 55700, 69625, 75752, 94690, 111400, 139250, 151504, 189380, 222800, 236725, 278500, 378760, 473450, 557000, 757520, 946900, 1114000, 1183625, 1893800, 2367250, 3787600, 4734500, 9469000, 18938000]

約数ペア:

[(1, 18938000), (2, 9469000), (4, 4734500), (5, 3787600), (8, 2367250), (10, 1893800), (16, 1183625), (17, 1114000), (20, 946900), (25, 757520), (34, 557000), (40, 473450), (50, 378760), (68, 278500), (80, 236725), (85, 222800), (100, 189380), (125, 151504), (136, 139250), (170, 111400), (200, 94690), (250, 75752), (272, 69625), (340, 55700), (400, 47345), (425, 44560), (500, 37876), (557, 34000), (680, 27850), (850, 22280), (1000, 18938), (1114, 17000), (1360, 13925), (1700, 11140), (2000, 9469), (2125, 8912), (2228, 8500), (2785, 6800), (3400, 5570), (4250, 4456)]