20311520

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1$

素因数の和:172

約数の個数: 96

約数和(自身を含む): 51020928

約数和(自身を除く): 30709408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 47, 73, 74, 80, 94, 146, 148, 160, 185, 188, 235, 292, 296, 365, 370, 376, 470, 584, 592, 730, 740, 752, 940, 1168, 1184, 1460, 1480, 1504, 1739, 1880, 2336, 2701, 2920, 2960, 3431, 3478, 3760, 5402, 5840, 5920, 6862, 6956, 7520, 8695, 10804, 11680, 13505, 13724, 13912, 17155, 17390, 21608, 27010, 27448, 27824, 34310, 34780, 43216, 54020, 54896, 55648, 68620, 69560, 86432, 108040, 109792, 126947, 137240, 139120, 216080, 253894, 274480, 278240, 432160, 507788, 548960, 634735, 1015576, 1269470, 2031152, 2538940, 4062304, 5077880, 10155760, 20311520]

約数ペア:

[(1, 20311520), (2, 10155760), (4, 5077880), (5, 4062304), (8, 2538940), (10, 2031152), (16, 1269470), (20, 1015576), (32, 634735), (37, 548960), (40, 507788), (47, 432160), (73, 278240), (74, 274480), (80, 253894), (94, 216080), (146, 139120), (148, 137240), (160, 126947), (185, 109792), (188, 108040), (235, 86432), (292, 69560), (296, 68620), (365, 55648), (370, 54896), (376, 54020), (470, 43216), (584, 34780), (592, 34310), (730, 27824), (740, 27448), (752, 27010), (940, 21608), (1168, 17390), (1184, 17155), (1460, 13912), (1480, 13724), (1504, 13505), (1739, 11680), (1880, 10804), (2336, 8695), (2701, 7520), (2920, 6956), (2960, 6862), (3431, 5920), (3478, 5840), (3760, 5402)]