320437880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:409

約数の個数: 128

約数和(自身を含む): 852266880

約数和(自身を除く): 531829000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 73, 122, 140, 146, 244, 257, 280, 292, 305, 365, 427, 488, 511, 514, 584, 610, 730, 854, 1022, 1028, 1220, 1285, 1460, 1708, 1799, 2044, 2056, 2135, 2440, 2555, 2570, 2920, 3416, 3598, 4088, 4270, 4453, 5110, 5140, 7196, 8540, 8906, 8995, 10220, 10280, 14392, 15677, 17080, 17812, 17990, 18761, 20440, 22265, 31171, 31354, 35624, 35980, 37522, 44530, 62342, 62708, 71960, 75044, 78385, 89060, 93805, 109739, 124684, 125416, 131327, 150088, 155855, 156770, 178120, 187610, 219478, 249368, 262654, 311710, 313540, 375220, 438956, 525308, 548695, 623420, 627080, 656635, 750440, 877912, 1050616, 1097390, 1144421, 1246840, 1313270, 2194780, 2288842, 2626540, 4389560, 4577684, 5253080, 5722105, 8010947, 9155368, 11444210, 16021894, 22888420, 32043788, 40054735, 45776840, 64087576, 80109470, 160218940, 320437880]

約数ペア:

[(1, 320437880), (2, 160218940), (4, 80109470), (5, 64087576), (7, 45776840), (8, 40054735), (10, 32043788), (14, 22888420), (20, 16021894), (28, 11444210), (35, 9155368), (40, 8010947), (56, 5722105), (61, 5253080), (70, 4577684), (73, 4389560), (122, 2626540), (140, 2288842), (146, 2194780), (244, 1313270), (257, 1246840), (280, 1144421), (292, 1097390), (305, 1050616), (365, 877912), (427, 750440), (488, 656635), (511, 627080), (514, 623420), (584, 548695), (610, 525308), (730, 438956), (854, 375220), (1022, 313540), (1028, 311710), (1220, 262654), (1285, 249368), (1460, 219478), (1708, 187610), (1799, 178120), (2044, 156770), (2056, 155855), (2135, 150088), (2440, 131327), (2555, 125416), (2570, 124684), (2920, 109739), (3416, 93805), (3598, 89060), (4088, 78385), (4270, 75044), (4453, 71960), (5110, 62708), (5140, 62342), (7196, 44530), (8540, 37522), (8906, 35980), (8995, 35624), (10220, 31354), (10280, 31171), (14392, 22265), (15677, 20440), (17080, 18761), (17812, 17990)]