19997910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{222199}}^1$

素因数の和:222212

約数の個数: 24

約数和(自身を含む): 51994800

約数和(自身を除く): 31996890

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 222199, 444398, 666597, 1110995, 1333194, 1999791, 2221990, 3332985, 3999582, 6665970, 9998955, 19997910]

約数ペア:

[(1, 19997910), (2, 9998955), (3, 6665970), (5, 3999582), (6, 3332985), (9, 2221990), (10, 1999791), (15, 1333194), (18, 1110995), (30, 666597), (45, 444398), (90, 222199)]