28940940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{223}}^1$

素因数の和:348

約数の個数: 144

約数和(自身を含む): 101756928

約数和(自身を除く): 72815988

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 103, 105, 126, 140, 180, 206, 210, 223, 252, 309, 315, 412, 420, 446, 515, 618, 630, 669, 721, 892, 927, 1030, 1115, 1236, 1260, 1338, 1442, 1545, 1561, 1854, 2007, 2060, 2163, 2230, 2676, 2884, 3090, 3122, 3345, 3605, 3708, 4014, 4326, 4460, 4635, 4683, 6180, 6244, 6489, 6690, 7210, 7805, 8028, 8652, 9270, 9366, 10035, 10815, 12978, 13380, 14049, 14420, 15610, 18540, 18732, 20070, 21630, 22969, 23415, 25956, 28098, 31220, 32445, 40140, 43260, 45938, 46830, 56196, 64890, 68907, 70245, 91876, 93660, 114845, 129780, 137814, 140490, 160783, 206721, 229690, 275628, 280980, 321566, 344535, 413442, 459380, 482349, 643132, 689070, 803915, 826884, 964698, 1033605, 1378140, 1447047, 1607830, 1929396, 2067210, 2411745, 2894094, 3215660, 4134420, 4823490, 5788188, 7235235, 9646980, 14470470, 28940940]

約数ペア:

[(1, 28940940), (2, 14470470), (3, 9646980), (4, 7235235), (5, 5788188), (6, 4823490), (7, 4134420), (9, 3215660), (10, 2894094), (12, 2411745), (14, 2067210), (15, 1929396), (18, 1607830), (20, 1447047), (21, 1378140), (28, 1033605), (30, 964698), (35, 826884), (36, 803915), (42, 689070), (45, 643132), (60, 482349), (63, 459380), (70, 413442), (84, 344535), (90, 321566), (103, 280980), (105, 275628), (126, 229690), (140, 206721), (180, 160783), (206, 140490), (210, 137814), (223, 129780), (252, 114845), (309, 93660), (315, 91876), (412, 70245), (420, 68907), (446, 64890), (515, 56196), (618, 46830), (630, 45938), (669, 43260), (721, 40140), (892, 32445), (927, 31220), (1030, 28098), (1115, 25956), (1236, 23415), (1260, 22969), (1338, 21630), (1442, 20070), (1545, 18732), (1561, 18540), (1854, 15610), (2007, 14420), (2060, 14049), (2163, 13380), (2230, 12978), (2676, 10815), (2884, 10035), (3090, 9366), (3122, 9270), (3345, 8652), (3605, 8028), (3708, 7805), (4014, 7210), (4326, 6690), (4460, 6489), (4635, 6244), (4683, 6180)]