19799820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{347}}^1$

素因数の和:679

約数の個数: 72

約数和(自身を含む): 60422544

約数和(自身を除く): 40622724

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 317, 347, 634, 694, 951, 1041, 1268, 1388, 1585, 1735, 1902, 2082, 2853, 3123, 3170, 3470, 3804, 4164, 4755, 5205, 5706, 6246, 6340, 6940, 9510, 10410, 11412, 12492, 14265, 15615, 19020, 20820, 28530, 31230, 57060, 62460, 109999, 219998, 329997, 439996, 549995, 659994, 989991, 1099990, 1319988, 1649985, 1979982, 2199980, 3299970, 3959964, 4949955, 6599940, 9899910, 19799820]

約数ペア:

[(1, 19799820), (2, 9899910), (3, 6599940), (4, 4949955), (5, 3959964), (6, 3299970), (9, 2199980), (10, 1979982), (12, 1649985), (15, 1319988), (18, 1099990), (20, 989991), (30, 659994), (36, 549995), (45, 439996), (60, 329997), (90, 219998), (180, 109999), (317, 62460), (347, 57060), (634, 31230), (694, 28530), (951, 20820), (1041, 19020), (1268, 15615), (1388, 14265), (1585, 12492), (1735, 11412), (1902, 10410), (2082, 9510), (2853, 6940), (3123, 6340), (3170, 6246), (3470, 5706), (3804, 5205), (4164, 4755)]