821790

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:433

約数の個数: 48

約数和(自身を含む): 2235168

約数和(自身を除く): 1413378

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 69, 90, 115, 138, 207, 230, 345, 397, 414, 690, 794, 1035, 1191, 1985, 2070, 2382, 3573, 3970, 5955, 7146, 9131, 11910, 17865, 18262, 27393, 35730, 45655, 54786, 82179, 91310, 136965, 164358, 273930, 410895, 821790]

約数ペア:

[(1, 821790), (2, 410895), (3, 273930), (5, 164358), (6, 136965), (9, 91310), (10, 82179), (15, 54786), (18, 45655), (23, 35730), (30, 27393), (45, 18262), (46, 17865), (69, 11910), (90, 9131), (115, 7146), (138, 5955), (207, 3970), (230, 3573), (345, 2382), (397, 2070), (414, 1985), (690, 1191), (794, 1035)]