21125034

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{431}}^1$

素因数の和:835

約数の個数: 48

約数和(自身を含む): 52565760

約数和(自身を除く): 31440726

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 389, 431, 778, 862, 1167, 1293, 2334, 2586, 2723, 3017, 3501, 3879, 5446, 6034, 7002, 7758, 8169, 9051, 16338, 18102, 24507, 27153, 49014, 54306, 167659, 335318, 502977, 1005954, 1173613, 1508931, 2347226, 3017862, 3520839, 7041678, 10562517, 21125034]

約数ペア:

[(1, 21125034), (2, 10562517), (3, 7041678), (6, 3520839), (7, 3017862), (9, 2347226), (14, 1508931), (18, 1173613), (21, 1005954), (42, 502977), (63, 335318), (126, 167659), (389, 54306), (431, 49014), (778, 27153), (862, 24507), (1167, 18102), (1293, 16338), (2334, 9051), (2586, 8169), (2723, 7758), (3017, 7002), (3501, 6034), (3879, 5446)]