19869250

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 40435200

約数和(自身を除く): 20565950

約数列:

[1, 2, 5, 10, 19, 25, 38, 47, 50, 89, 94, 95, 125, 178, 190, 235, 250, 445, 470, 475, 890, 893, 950, 1175, 1691, 1786, 2225, 2350, 2375, 3382, 4183, 4450, 4465, 4750, 5875, 8366, 8455, 8930, 11125, 11750, 16910, 20915, 22250, 22325, 41830, 42275, 44650, 79477, 84550, 104575, 111625, 158954, 209150, 211375, 223250, 397385, 422750, 522875, 794770, 1045750, 1986925, 3973850, 9934625, 19869250]

約数ペア:

[(1, 19869250), (2, 9934625), (5, 3973850), (10, 1986925), (19, 1045750), (25, 794770), (38, 522875), (47, 422750), (50, 397385), (89, 223250), (94, 211375), (95, 209150), (125, 158954), (178, 111625), (190, 104575), (235, 84550), (250, 79477), (445, 44650), (470, 42275), (475, 41830), (890, 22325), (893, 22250), (950, 20915), (1175, 16910), (1691, 11750), (1786, 11125), (2225, 8930), (2350, 8455), (2375, 8366), (3382, 5875), (4183, 4750), (4450, 4465)]