28399980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{67619}}^1$

素因数の和:67638

約数の個数: 48

約数和(自身を含む): 90881280

約数和(自身を除く): 62481300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 67619, 135238, 202857, 270476, 338095, 405714, 473333, 676190, 811428, 946666, 1014285, 1352380, 1419999, 1893332, 2028570, 2366665, 2839998, 4057140, 4733330, 5679996, 7099995, 9466660, 14199990, 28399980]

約数ペア:

[(1, 28399980), (2, 14199990), (3, 9466660), (4, 7099995), (5, 5679996), (6, 4733330), (7, 4057140), (10, 2839998), (12, 2366665), (14, 2028570), (15, 1893332), (20, 1419999), (21, 1352380), (28, 1014285), (30, 946666), (35, 811428), (42, 676190), (60, 473333), (70, 405714), (84, 338095), (105, 270476), (140, 202857), (210, 135238), (420, 67619)]