21684516

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{6977}}^1$

素因数の和:7028

約数の個数: 48

約数和(自身を含む): 59396736

約数和(自身を除く): 37712220

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 74, 84, 111, 148, 222, 259, 444, 518, 777, 1036, 1554, 3108, 6977, 13954, 20931, 27908, 41862, 48839, 83724, 97678, 146517, 195356, 258149, 293034, 516298, 586068, 774447, 1032596, 1548894, 1807043, 3097788, 3614086, 5421129, 7228172, 10842258, 21684516]

約数ペア:

[(1, 21684516), (2, 10842258), (3, 7228172), (4, 5421129), (6, 3614086), (7, 3097788), (12, 1807043), (14, 1548894), (21, 1032596), (28, 774447), (37, 586068), (42, 516298), (74, 293034), (84, 258149), (111, 195356), (148, 146517), (222, 97678), (259, 83724), (444, 48839), (518, 41862), (777, 27908), (1036, 20931), (1554, 13954), (3108, 6977)]