131718860

素因数分解:

$2^2\times 5^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{211}}^1$

素因数の和:261

約数の個数: 120

約数和(自身を含む): 349161456

約数和(自身を除く): 217442596

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 211, 245, 260, 343, 364, 422, 455, 490, 637, 686, 844, 910, 980, 1055, 1274, 1372, 1477, 1715, 1820, 2110, 2401, 2548, 2743, 2954, 3185, 3430, 4220, 4459, 4802, 5486, 5908, 6370, 6860, 7385, 8918, 9604, 10339, 10972, 12005, 12740, 13715, 14770, 17836, 19201, 20678, 22295, 24010, 27430, 29540, 31213, 38402, 41356, 44590, 48020, 51695, 54860, 62426, 72373, 76804, 89180, 96005, 103390, 124852, 134407, 144746, 156065, 192010, 206780, 268814, 289492, 312130, 361865, 384020, 506611, 537628, 624260, 672035, 723730, 940849, 1013222, 1344070, 1447460, 1881698, 2026444, 2533055, 2688140, 3763396, 4704245, 5066110, 6585943, 9408490, 10132220, 13171886, 18816980, 26343772, 32929715, 65859430, 131718860]

約数ペア:

[(1, 131718860), (2, 65859430), (4, 32929715), (5, 26343772), (7, 18816980), (10, 13171886), (13, 10132220), (14, 9408490), (20, 6585943), (26, 5066110), (28, 4704245), (35, 3763396), (49, 2688140), (52, 2533055), (65, 2026444), (70, 1881698), (91, 1447460), (98, 1344070), (130, 1013222), (140, 940849), (182, 723730), (196, 672035), (211, 624260), (245, 537628), (260, 506611), (343, 384020), (364, 361865), (422, 312130), (455, 289492), (490, 268814), (637, 206780), (686, 192010), (844, 156065), (910, 144746), (980, 134407), (1055, 124852), (1274, 103390), (1372, 96005), (1477, 89180), (1715, 76804), (1820, 72373), (2110, 62426), (2401, 54860), (2548, 51695), (2743, 48020), (2954, 44590), (3185, 41356), (3430, 38402), (4220, 31213), (4459, 29540), (4802, 27430), (5486, 24010), (5908, 22295), (6370, 20678), (6860, 19201), (7385, 17836), (8918, 14770), (9604, 13715), (10339, 12740), (10972, 12005)]