81528356

素因数分解:

$2^2\times 7^4\times {\mathrm{13}}^1\times {\mathrm{653}}^1$

素因数の和:698

約数の個数: 60

約数和(自身を含む): 179521692

約数和(自身を除く): 97993336

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 343, 364, 637, 653, 686, 1274, 1306, 1372, 2401, 2548, 2612, 4459, 4571, 4802, 8489, 8918, 9142, 9604, 16978, 17836, 18284, 31213, 31997, 33956, 59423, 62426, 63994, 118846, 124852, 127988, 223979, 237692, 415961, 447958, 831922, 895916, 1567853, 1663844, 2911727, 3135706, 5823454, 6271412, 11646908, 20382089, 40764178, 81528356]

約数ペア:

[(1, 81528356), (2, 40764178), (4, 20382089), (7, 11646908), (13, 6271412), (14, 5823454), (26, 3135706), (28, 2911727), (49, 1663844), (52, 1567853), (91, 895916), (98, 831922), (182, 447958), (196, 415961), (343, 237692), (364, 223979), (637, 127988), (653, 124852), (686, 118846), (1274, 63994), (1306, 62426), (1372, 59423), (2401, 33956), (2548, 31997), (2612, 31213), (4459, 18284), (4571, 17836), (4802, 16978), (8489, 9604), (8918, 9142)]