98931980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{643}}^1$

素因数の和:823

約数の個数: 72

約数和(自身を含む): 243594288

約数和(自身を除く): 144662308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 157, 196, 245, 314, 490, 628, 643, 785, 980, 1099, 1286, 1570, 2198, 2572, 3140, 3215, 4396, 4501, 5495, 6430, 7693, 9002, 10990, 12860, 15386, 18004, 21980, 22505, 30772, 31507, 38465, 45010, 63014, 76930, 90020, 100951, 126028, 153860, 157535, 201902, 315070, 403804, 504755, 630140, 706657, 1009510, 1413314, 2019020, 2826628, 3533285, 4946599, 7066570, 9893198, 14133140, 19786396, 24732995, 49465990, 98931980]

約数ペア:

[(1, 98931980), (2, 49465990), (4, 24732995), (5, 19786396), (7, 14133140), (10, 9893198), (14, 7066570), (20, 4946599), (28, 3533285), (35, 2826628), (49, 2019020), (70, 1413314), (98, 1009510), (140, 706657), (157, 630140), (196, 504755), (245, 403804), (314, 315070), (490, 201902), (628, 157535), (643, 153860), (785, 126028), (980, 100951), (1099, 90020), (1286, 76930), (1570, 63014), (2198, 45010), (2572, 38465), (3140, 31507), (3215, 30772), (4396, 22505), (4501, 21980), (5495, 18004), (6430, 15386), (7693, 12860), (9002, 10990)]