20310920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{251}}^1$

素因数の和:303

約数の個数: 96

約数和(自身を含む): 55702080

約数和(自身を除く): 35391160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 251, 280, 289, 340, 476, 502, 578, 595, 680, 952, 1004, 1156, 1190, 1255, 1445, 1757, 2008, 2023, 2312, 2380, 2510, 2890, 3514, 4046, 4267, 4760, 5020, 5780, 7028, 8092, 8534, 8785, 10040, 10115, 11560, 14056, 16184, 17068, 17570, 20230, 21335, 29869, 34136, 35140, 40460, 42670, 59738, 70280, 72539, 80920, 85340, 119476, 145078, 149345, 170680, 238952, 290156, 298690, 362695, 507773, 580312, 597380, 725390, 1015546, 1194760, 1450780, 2031092, 2538865, 2901560, 4062184, 5077730, 10155460, 20310920]

約数ペア:

[(1, 20310920), (2, 10155460), (4, 5077730), (5, 4062184), (7, 2901560), (8, 2538865), (10, 2031092), (14, 1450780), (17, 1194760), (20, 1015546), (28, 725390), (34, 597380), (35, 580312), (40, 507773), (56, 362695), (68, 298690), (70, 290156), (85, 238952), (119, 170680), (136, 149345), (140, 145078), (170, 119476), (238, 85340), (251, 80920), (280, 72539), (289, 70280), (340, 59738), (476, 42670), (502, 40460), (578, 35140), (595, 34136), (680, 29869), (952, 21335), (1004, 20230), (1156, 17570), (1190, 17068), (1255, 16184), (1445, 14056), (1757, 11560), (2008, 10115), (2023, 10040), (2312, 8785), (2380, 8534), (2510, 8092), (2890, 7028), (3514, 5780), (4046, 5020), (4267, 4760)]