21271590

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13903}}^1$

素因数の和:13933

約数の個数: 48

約数和(自身を含む): 58563648

約数和(自身を除く): 37292058

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 17, 18, 30, 34, 45, 51, 85, 90, 102, 153, 170, 255, 306, 510, 765, 1530, 13903, 27806, 41709, 69515, 83418, 125127, 139030, 208545, 236351, 250254, 417090, 472702, 625635, 709053, 1181755, 1251270, 1418106, 2127159, 2363510, 3545265, 4254318, 7090530, 10635795, 21271590]

約数ペア:

[(1, 21271590), (2, 10635795), (3, 7090530), (5, 4254318), (6, 3545265), (9, 2363510), (10, 2127159), (15, 1418106), (17, 1251270), (18, 1181755), (30, 709053), (34, 625635), (45, 472702), (51, 417090), (85, 250254), (90, 236351), (102, 208545), (153, 139030), (170, 125127), (255, 83418), (306, 69515), (510, 41709), (765, 27806), (1530, 13903)]