18611680

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1307}}^1$

素因数の和:1411

約数の個数: 48

約数和(自身を含む): 44498160

約数和(自身を除く): 25886480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 890, 1307, 1424, 1780, 2614, 2848, 3560, 5228, 6535, 7120, 10456, 13070, 14240, 20912, 26140, 41824, 52280, 104560, 116323, 209120, 232646, 465292, 581615, 930584, 1163230, 1861168, 2326460, 3722336, 4652920, 9305840, 18611680]

約数ペア:

[(1, 18611680), (2, 9305840), (4, 4652920), (5, 3722336), (8, 2326460), (10, 1861168), (16, 1163230), (20, 930584), (32, 581615), (40, 465292), (80, 232646), (89, 209120), (160, 116323), (178, 104560), (356, 52280), (445, 41824), (712, 26140), (890, 20912), (1307, 14240), (1424, 13070), (1780, 10456), (2614, 7120), (2848, 6535), (3560, 5228)]