21718980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{120661}}^1$

素因数の和:120676

約数の個数: 36

約数和(自身を含む): 65881452

約数和(自身を除く): 44162472

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 120661, 241322, 361983, 482644, 603305, 723966, 1085949, 1206610, 1447932, 1809915, 2171898, 2413220, 3619830, 4343796, 5429745, 7239660, 10859490, 21718980]

約数ペア:

[(1, 21718980), (2, 10859490), (3, 7239660), (4, 5429745), (5, 4343796), (6, 3619830), (9, 2413220), (10, 2171898), (12, 1809915), (15, 1447932), (18, 1206610), (20, 1085949), (30, 723966), (36, 603305), (45, 482644), (60, 361983), (90, 241322), (180, 120661)]