66899687020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1\times {\mathrm{256301}}^1$

素因数の和:256762

約数の個数: 48

約数和(自身を含む): 145366292736

約数和(自身を除く): 78466605716

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 421, 620, 842, 1684, 2105, 4210, 8420, 13051, 26102, 52204, 65255, 130510, 256301, 261020, 512602, 1025204, 1281505, 2563010, 5126020, 7945331, 15890662, 31781324, 39726655, 79453310, 107902721, 158906620, 215805442, 431610884, 539513605, 1079027210, 2158054420, 3344984351, 6689968702, 13379937404, 16724921755, 33449843510, 66899687020]

約数ペア:

[(1, 66899687020), (2, 33449843510), (4, 16724921755), (5, 13379937404), (10, 6689968702), (20, 3344984351), (31, 2158054420), (62, 1079027210), (124, 539513605), (155, 431610884), (310, 215805442), (421, 158906620), (620, 107902721), (842, 79453310), (1684, 39726655), (2105, 31781324), (4210, 15890662), (8420, 7945331), (13051, 5126020), (26102, 2563010), (52204, 1281505), (65255, 1025204), (130510, 512602), (256301, 261020)]