19878678

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{389}}^1$

素因数の和:581

約数の個数: 48

約数和(自身を含む): 45995040

約数和(自身を除く): 26116362

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 167, 306, 334, 389, 501, 778, 1002, 1167, 1503, 2334, 2839, 3006, 3501, 5678, 6613, 7002, 8517, 13226, 17034, 19839, 25551, 39678, 51102, 59517, 64963, 119034, 129926, 194889, 389778, 584667, 1104371, 1169334, 2208742, 3313113, 6626226, 9939339, 19878678]

約数ペア:

[(1, 19878678), (2, 9939339), (3, 6626226), (6, 3313113), (9, 2208742), (17, 1169334), (18, 1104371), (34, 584667), (51, 389778), (102, 194889), (153, 129926), (167, 119034), (306, 64963), (334, 59517), (389, 51102), (501, 39678), (778, 25551), (1002, 19839), (1167, 17034), (1503, 13226), (2334, 8517), (2839, 7002), (3006, 6613), (3501, 5678)]