29688920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 70187040

約数和(自身を除く): 40498120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 164, 172, 205, 215, 328, 344, 410, 421, 430, 820, 842, 860, 1640, 1684, 1720, 1763, 2105, 3368, 3526, 4210, 7052, 8420, 8815, 14104, 16840, 17261, 17630, 18103, 34522, 35260, 36206, 69044, 70520, 72412, 86305, 90515, 138088, 144824, 172610, 181030, 345220, 362060, 690440, 724120, 742223, 1484446, 2968892, 3711115, 5937784, 7422230, 14844460, 29688920]

約数ペア:

[(1, 29688920), (2, 14844460), (4, 7422230), (5, 5937784), (8, 3711115), (10, 2968892), (20, 1484446), (40, 742223), (41, 724120), (43, 690440), (82, 362060), (86, 345220), (164, 181030), (172, 172610), (205, 144824), (215, 138088), (328, 90515), (344, 86305), (410, 72412), (421, 70520), (430, 69044), (820, 36206), (842, 35260), (860, 34522), (1640, 18103), (1684, 17630), (1720, 17261), (1763, 16840), (2105, 14104), (3368, 8815), (3526, 8420), (4210, 7052)]