19862980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{313}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 44311680

約数和(自身を除く): 24448700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 167, 190, 313, 334, 380, 626, 668, 835, 1252, 1565, 1670, 3130, 3173, 3340, 5947, 6260, 6346, 11894, 12692, 15865, 23788, 29735, 31730, 52271, 59470, 63460, 104542, 118940, 209084, 261355, 522710, 993149, 1045420, 1986298, 3972596, 4965745, 9931490, 19862980]

約数ペア:

[(1, 19862980), (2, 9931490), (4, 4965745), (5, 3972596), (10, 1986298), (19, 1045420), (20, 993149), (38, 522710), (76, 261355), (95, 209084), (167, 118940), (190, 104542), (313, 63460), (334, 59470), (380, 52271), (626, 31730), (668, 29735), (835, 23788), (1252, 15865), (1565, 12692), (1670, 11894), (3130, 6346), (3173, 6260), (3340, 5947)]