80706640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4649}}^1$

素因数の和:4700

約数の個数: 80

約数和(自身を含む): 221414400

約数和(自身を除く): 140707760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1736, 2170, 2480, 3472, 4340, 4649, 8680, 9298, 17360, 18596, 23245, 32543, 37192, 46490, 65086, 74384, 92980, 130172, 144119, 162715, 185960, 260344, 288238, 325430, 371920, 520688, 576476, 650860, 720595, 1008833, 1152952, 1301720, 1441190, 2017666, 2305904, 2603440, 2882380, 4035332, 5044165, 5764760, 8070664, 10088330, 11529520, 16141328, 20176660, 40353320, 80706640]

約数ペア:

[(1, 80706640), (2, 40353320), (4, 20176660), (5, 16141328), (7, 11529520), (8, 10088330), (10, 8070664), (14, 5764760), (16, 5044165), (20, 4035332), (28, 2882380), (31, 2603440), (35, 2305904), (40, 2017666), (56, 1441190), (62, 1301720), (70, 1152952), (80, 1008833), (112, 720595), (124, 650860), (140, 576476), (155, 520688), (217, 371920), (248, 325430), (280, 288238), (310, 260344), (434, 185960), (496, 162715), (560, 144119), (620, 130172), (868, 92980), (1085, 74384), (1240, 65086), (1736, 46490), (2170, 37192), (2480, 32543), (3472, 23245), (4340, 18596), (4649, 17360), (8680, 9298)]