19938060

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{431}}^1$

素因数の和:703

約数の個数: 72

約数和(自身を含む): 60854976

約数和(自身を除く): 40916916

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 257, 431, 514, 771, 862, 1028, 1285, 1293, 1542, 1724, 2155, 2313, 2570, 2586, 3084, 3855, 3879, 4310, 4626, 5140, 5172, 6465, 7710, 7758, 8620, 9252, 11565, 12930, 15420, 15516, 19395, 23130, 25860, 38790, 46260, 77580, 110767, 221534, 332301, 443068, 553835, 664602, 996903, 1107670, 1329204, 1661505, 1993806, 2215340, 3323010, 3987612, 4984515, 6646020, 9969030, 19938060]

約数ペア:

[(1, 19938060), (2, 9969030), (3, 6646020), (4, 4984515), (5, 3987612), (6, 3323010), (9, 2215340), (10, 1993806), (12, 1661505), (15, 1329204), (18, 1107670), (20, 996903), (30, 664602), (36, 553835), (45, 443068), (60, 332301), (90, 221534), (180, 110767), (257, 77580), (431, 46260), (514, 38790), (771, 25860), (862, 23130), (1028, 19395), (1285, 15516), (1293, 15420), (1542, 12930), (1724, 11565), (2155, 9252), (2313, 8620), (2570, 7758), (2586, 7710), (3084, 6465), (3855, 5172), (3879, 5140), (4310, 4626)]