20864916

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{331}}^1$

素因数の和:461

約数の個数: 72

約数和(自身を含む): 56556864

約数和(自身を除く): 35691948

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 103, 153, 204, 206, 306, 309, 331, 412, 612, 618, 662, 927, 993, 1236, 1324, 1751, 1854, 1986, 2979, 3502, 3708, 3972, 5253, 5627, 5958, 7004, 10506, 11254, 11916, 15759, 16881, 21012, 22508, 31518, 33762, 34093, 50643, 63036, 67524, 68186, 101286, 102279, 136372, 202572, 204558, 306837, 409116, 579581, 613674, 1159162, 1227348, 1738743, 2318324, 3477486, 5216229, 6954972, 10432458, 20864916]

約数ペア:

[(1, 20864916), (2, 10432458), (3, 6954972), (4, 5216229), (6, 3477486), (9, 2318324), (12, 1738743), (17, 1227348), (18, 1159162), (34, 613674), (36, 579581), (51, 409116), (68, 306837), (102, 204558), (103, 202572), (153, 136372), (204, 102279), (206, 101286), (306, 68186), (309, 67524), (331, 63036), (412, 50643), (612, 34093), (618, 33762), (662, 31518), (927, 22508), (993, 21012), (1236, 16881), (1324, 15759), (1751, 11916), (1854, 11254), (1986, 10506), (2979, 7004), (3502, 5958), (3708, 5627), (3972, 5253)]