19990810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:295

約数の個数: 64

約数和(自身を含む): 44229888

約数和(自身を除く): 24239078

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 107, 119, 157, 170, 214, 238, 314, 535, 595, 749, 785, 1070, 1099, 1190, 1498, 1570, 1819, 2198, 2669, 3638, 3745, 5338, 5495, 7490, 9095, 10990, 12733, 13345, 16799, 18190, 18683, 25466, 26690, 33598, 37366, 63665, 83995, 93415, 117593, 127330, 167990, 186830, 235186, 285583, 571166, 587965, 1175930, 1427915, 1999081, 2855830, 3998162, 9995405, 19990810]

約数ペア:

[(1, 19990810), (2, 9995405), (5, 3998162), (7, 2855830), (10, 1999081), (14, 1427915), (17, 1175930), (34, 587965), (35, 571166), (70, 285583), (85, 235186), (107, 186830), (119, 167990), (157, 127330), (170, 117593), (214, 93415), (238, 83995), (314, 63665), (535, 37366), (595, 33598), (749, 26690), (785, 25466), (1070, 18683), (1099, 18190), (1190, 16799), (1498, 13345), (1570, 12733), (1819, 10990), (2198, 9095), (2669, 7490), (3638, 5495), (3745, 5338)]