81543020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:271

約数の個数: 96

約数和(自身を含む): 194482176

約数和(自身を除く): 112939156

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 67, 124, 130, 134, 151, 155, 260, 268, 302, 310, 335, 403, 604, 620, 670, 755, 806, 871, 1340, 1510, 1612, 1742, 1963, 2015, 2077, 3020, 3484, 3926, 4030, 4154, 4355, 4681, 7852, 8060, 8308, 8710, 9362, 9815, 10117, 10385, 17420, 18724, 19630, 20234, 20770, 23405, 27001, 39260, 40468, 41540, 46810, 50585, 54002, 60853, 93620, 101170, 108004, 121706, 131521, 135005, 202340, 243412, 263042, 270010, 304265, 313627, 526084, 540020, 608530, 627254, 657605, 1217060, 1254508, 1315210, 1568135, 2630420, 3136270, 4077151, 6272540, 8154302, 16308604, 20385755, 40771510, 81543020]

約数ペア:

[(1, 81543020), (2, 40771510), (4, 20385755), (5, 16308604), (10, 8154302), (13, 6272540), (20, 4077151), (26, 3136270), (31, 2630420), (52, 1568135), (62, 1315210), (65, 1254508), (67, 1217060), (124, 657605), (130, 627254), (134, 608530), (151, 540020), (155, 526084), (260, 313627), (268, 304265), (302, 270010), (310, 263042), (335, 243412), (403, 202340), (604, 135005), (620, 131521), (670, 121706), (755, 108004), (806, 101170), (871, 93620), (1340, 60853), (1510, 54002), (1612, 50585), (1742, 46810), (1963, 41540), (2015, 40468), (2077, 39260), (3020, 27001), (3484, 23405), (3926, 20770), (4030, 20234), (4154, 19630), (4355, 18724), (4681, 17420), (7852, 10385), (8060, 10117), (8308, 9815), (8710, 9362)]