19891770

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{293}}^1$

素因数の和:407

約数の個数: 64

約数和(自身を含む): 50125824

約数和(自身を除く): 30234054

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 73, 93, 146, 155, 186, 219, 293, 310, 365, 438, 465, 586, 730, 879, 930, 1095, 1465, 1758, 2190, 2263, 2930, 4395, 4526, 6789, 8790, 9083, 11315, 13578, 18166, 21389, 22630, 27249, 33945, 42778, 45415, 54498, 64167, 67890, 90830, 106945, 128334, 136245, 213890, 272490, 320835, 641670, 663059, 1326118, 1989177, 3315295, 3978354, 6630590, 9945885, 19891770]

約数ペア:

[(1, 19891770), (2, 9945885), (3, 6630590), (5, 3978354), (6, 3315295), (10, 1989177), (15, 1326118), (30, 663059), (31, 641670), (62, 320835), (73, 272490), (93, 213890), (146, 136245), (155, 128334), (186, 106945), (219, 90830), (293, 67890), (310, 64167), (365, 54498), (438, 45415), (465, 42778), (586, 33945), (730, 27249), (879, 22630), (930, 21389), (1095, 18166), (1465, 13578), (1758, 11315), (2190, 9083), (2263, 8790), (2930, 6789), (4395, 4526)]