18679860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{661}}^1$

素因数の和:833

約数の個数: 72

約数和(自身を含む): 57109416

約数和(自身を除く): 38429556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 157, 180, 314, 471, 628, 661, 785, 942, 1322, 1413, 1570, 1884, 1983, 2355, 2644, 2826, 3140, 3305, 3966, 4710, 5652, 5949, 6610, 7065, 7932, 9420, 9915, 11898, 13220, 14130, 19830, 23796, 28260, 29745, 39660, 59490, 103777, 118980, 207554, 311331, 415108, 518885, 622662, 933993, 1037770, 1245324, 1556655, 1867986, 2075540, 3113310, 3735972, 4669965, 6226620, 9339930, 18679860]

約数ペア:

[(1, 18679860), (2, 9339930), (3, 6226620), (4, 4669965), (5, 3735972), (6, 3113310), (9, 2075540), (10, 1867986), (12, 1556655), (15, 1245324), (18, 1037770), (20, 933993), (30, 622662), (36, 518885), (45, 415108), (60, 311331), (90, 207554), (157, 118980), (180, 103777), (314, 59490), (471, 39660), (628, 29745), (661, 28260), (785, 23796), (942, 19830), (1322, 14130), (1413, 13220), (1570, 11898), (1884, 9915), (1983, 9420), (2355, 7932), (2644, 7065), (2826, 6610), (3140, 5949), (3305, 5652), (3966, 4710)]