20621000

素因数分解:

$2^3\times 5^3\times {\mathrm{17}}^1\times {\mathrm{1213}}^1$

素因数の和:1251

約数の個数: 64

約数和(自身を含む): 51133680

約数和(自身を除く): 30512680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 125, 136, 170, 200, 250, 340, 425, 500, 680, 850, 1000, 1213, 1700, 2125, 2426, 3400, 4250, 4852, 6065, 8500, 9704, 12130, 17000, 20621, 24260, 30325, 41242, 48520, 60650, 82484, 103105, 121300, 151625, 164968, 206210, 242600, 303250, 412420, 515525, 606500, 824840, 1031050, 1213000, 2062100, 2577625, 4124200, 5155250, 10310500, 20621000]

約数ペア:

[(1, 20621000), (2, 10310500), (4, 5155250), (5, 4124200), (8, 2577625), (10, 2062100), (17, 1213000), (20, 1031050), (25, 824840), (34, 606500), (40, 515525), (50, 412420), (68, 303250), (85, 242600), (100, 206210), (125, 164968), (136, 151625), (170, 121300), (200, 103105), (250, 82484), (340, 60650), (425, 48520), (500, 41242), (680, 30325), (850, 24260), (1000, 20621), (1213, 17000), (1700, 12130), (2125, 9704), (2426, 8500), (3400, 6065), (4250, 4852)]