18919516

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 44997120

約数和(自身を除く): 26077604

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 38, 44, 53, 61, 76, 77, 106, 122, 133, 154, 209, 212, 244, 266, 308, 371, 418, 427, 532, 583, 671, 742, 836, 854, 1007, 1159, 1166, 1342, 1463, 1484, 1708, 2014, 2318, 2332, 2684, 2926, 3233, 4028, 4081, 4636, 4697, 5852, 6466, 7049, 8113, 8162, 9394, 11077, 12749, 12932, 14098, 16226, 16324, 18788, 22154, 22631, 25498, 28196, 32452, 35563, 44308, 45262, 50996, 61427, 71126, 77539, 89243, 90524, 122854, 142252, 155078, 178486, 245708, 248941, 310156, 356972, 429989, 497882, 675697, 859978, 995764, 1351394, 1719956, 2702788, 4729879, 9459758, 18919516]

約数ペア:

[(1, 18919516), (2, 9459758), (4, 4729879), (7, 2702788), (11, 1719956), (14, 1351394), (19, 995764), (22, 859978), (28, 675697), (38, 497882), (44, 429989), (53, 356972), (61, 310156), (76, 248941), (77, 245708), (106, 178486), (122, 155078), (133, 142252), (154, 122854), (209, 90524), (212, 89243), (244, 77539), (266, 71126), (308, 61427), (371, 50996), (418, 45262), (427, 44308), (532, 35563), (583, 32452), (671, 28196), (742, 25498), (836, 22631), (854, 22154), (1007, 18788), (1159, 16324), (1166, 16226), (1342, 14098), (1463, 12932), (1484, 12749), (1708, 11077), (2014, 9394), (2318, 8162), (2332, 8113), (2684, 7049), (2926, 6466), (3233, 5852), (4028, 4697), (4081, 4636)]