81185650

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2549}}^1$

素因数の和:2588

約数の個数: 72

約数和(自身を含む): 189245700

約数和(自身を除く): 108060050

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 49, 50, 65, 70, 91, 98, 130, 175, 182, 245, 325, 350, 455, 490, 637, 650, 910, 1225, 1274, 2275, 2450, 2549, 3185, 4550, 5098, 6370, 12745, 15925, 17843, 25490, 31850, 33137, 35686, 63725, 66274, 89215, 124901, 127450, 165685, 178430, 231959, 249802, 331370, 446075, 463918, 624505, 828425, 892150, 1159795, 1249010, 1623713, 1656850, 2319590, 3122525, 3247426, 5798975, 6245050, 8118565, 11597950, 16237130, 40592825, 81185650]

約数ペア:

[(1, 81185650), (2, 40592825), (5, 16237130), (7, 11597950), (10, 8118565), (13, 6245050), (14, 5798975), (25, 3247426), (26, 3122525), (35, 2319590), (49, 1656850), (50, 1623713), (65, 1249010), (70, 1159795), (91, 892150), (98, 828425), (130, 624505), (175, 463918), (182, 446075), (245, 331370), (325, 249802), (350, 231959), (455, 178430), (490, 165685), (637, 127450), (650, 124901), (910, 89215), (1225, 66274), (1274, 63725), (2275, 35686), (2450, 33137), (2549, 31850), (3185, 25490), (4550, 17843), (5098, 15925), (6370, 12745)]