19948980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{503}}^1\times {\mathrm{661}}^1$

素因数の和:1176

約数の個数: 48

約数和(自身を含む): 56052864

約数和(自身を除く): 36103884

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 503, 661, 1006, 1322, 1509, 1983, 2012, 2515, 2644, 3018, 3305, 3966, 5030, 6036, 6610, 7545, 7932, 9915, 10060, 13220, 15090, 19830, 30180, 39660, 332483, 664966, 997449, 1329932, 1662415, 1994898, 3324830, 3989796, 4987245, 6649660, 9974490, 19948980]

約数ペア:

[(1, 19948980), (2, 9974490), (3, 6649660), (4, 4987245), (5, 3989796), (6, 3324830), (10, 1994898), (12, 1662415), (15, 1329932), (20, 997449), (30, 664966), (60, 332483), (503, 39660), (661, 30180), (1006, 19830), (1322, 15090), (1509, 13220), (1983, 10060), (2012, 9915), (2515, 7932), (2644, 7545), (3018, 6610), (3305, 6036), (3966, 5030)]