19923878

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:380

約数の個数: 32

約数和(自身を含む): 33530112

約数和(自身を除く): 13606234

約数列:

[1, 2, 13, 26, 43, 71, 86, 142, 251, 502, 559, 923, 1118, 1846, 3053, 3263, 6106, 6526, 10793, 17821, 21586, 35642, 39689, 79378, 140309, 231673, 280618, 463346, 766303, 1532606, 9961939, 19923878]

約数ペア:

[(1, 19923878), (2, 9961939), (13, 1532606), (26, 766303), (43, 463346), (71, 280618), (86, 231673), (142, 140309), (251, 79378), (502, 39689), (559, 35642), (923, 21586), (1118, 17821), (1846, 10793), (3053, 6526), (3263, 6106)]