19993610

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 44900352

約数和(自身を除く): 24906742

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 127, 130, 173, 182, 254, 346, 455, 635, 865, 889, 910, 1211, 1270, 1651, 1730, 1778, 2249, 2422, 3302, 4445, 4498, 6055, 8255, 8890, 11245, 11557, 12110, 15743, 16510, 21971, 22490, 23114, 31486, 43942, 57785, 78715, 109855, 115570, 153797, 157430, 219710, 285623, 307594, 571246, 768985, 1428115, 1537970, 1999361, 2856230, 3998722, 9996805, 19993610]

約数ペア:

[(1, 19993610), (2, 9996805), (5, 3998722), (7, 2856230), (10, 1999361), (13, 1537970), (14, 1428115), (26, 768985), (35, 571246), (65, 307594), (70, 285623), (91, 219710), (127, 157430), (130, 153797), (173, 115570), (182, 109855), (254, 78715), (346, 57785), (455, 43942), (635, 31486), (865, 23114), (889, 22490), (910, 21971), (1211, 16510), (1270, 15743), (1651, 12110), (1730, 11557), (1778, 11245), (2249, 8890), (2422, 8255), (3302, 6055), (4445, 4498)]