21210084

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4951}}^1$

素因数の和:4985

約数の個数: 72

約数和(自身を含む): 64891008

約数和(自身を除く): 43680924

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 51, 63, 68, 84, 102, 119, 126, 153, 204, 238, 252, 306, 357, 476, 612, 714, 1071, 1428, 2142, 4284, 4951, 9902, 14853, 19804, 29706, 34657, 44559, 59412, 69314, 84167, 89118, 103971, 138628, 168334, 178236, 207942, 252501, 311913, 336668, 415884, 505002, 589169, 623826, 757503, 1010004, 1178338, 1247652, 1515006, 1767507, 2356676, 3030012, 3535014, 5302521, 7070028, 10605042, 21210084]

約数ペア:

[(1, 21210084), (2, 10605042), (3, 7070028), (4, 5302521), (6, 3535014), (7, 3030012), (9, 2356676), (12, 1767507), (14, 1515006), (17, 1247652), (18, 1178338), (21, 1010004), (28, 757503), (34, 623826), (36, 589169), (42, 505002), (51, 415884), (63, 336668), (68, 311913), (84, 252501), (102, 207942), (119, 178236), (126, 168334), (153, 138628), (204, 103971), (238, 89118), (252, 84167), (306, 69314), (357, 59412), (476, 44559), (612, 34657), (714, 29706), (1071, 19804), (1428, 14853), (2142, 9902), (4284, 4951)]