81978876

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5333}}^1$

素因数の和:5411

約数の個数: 72

約数和(自身を含む): 240755424

約数和(自身を除く): 158776548

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 61, 63, 84, 122, 126, 183, 244, 252, 366, 427, 549, 732, 854, 1098, 1281, 1708, 2196, 2562, 3843, 5124, 5333, 7686, 10666, 15372, 15999, 21332, 31998, 37331, 47997, 63996, 74662, 95994, 111993, 149324, 191988, 223986, 325313, 335979, 447972, 650626, 671958, 975939, 1301252, 1343916, 1951878, 2277191, 2927817, 3903756, 4554382, 5855634, 6831573, 9108764, 11711268, 13663146, 20494719, 27326292, 40989438, 81978876]

約数ペア:

[(1, 81978876), (2, 40989438), (3, 27326292), (4, 20494719), (6, 13663146), (7, 11711268), (9, 9108764), (12, 6831573), (14, 5855634), (18, 4554382), (21, 3903756), (28, 2927817), (36, 2277191), (42, 1951878), (61, 1343916), (63, 1301252), (84, 975939), (122, 671958), (126, 650626), (183, 447972), (244, 335979), (252, 325313), (366, 223986), (427, 191988), (549, 149324), (732, 111993), (854, 95994), (1098, 74662), (1281, 63996), (1708, 47997), (2196, 37331), (2562, 31998), (3843, 21332), (5124, 15999), (5333, 15372), (7686, 10666)]