21403920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{883}}^1$

素因数の和:1000

約数の個数: 80

約数和(自身を含む): 67084992

約数和(自身を除く): 45681072

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 101, 120, 202, 240, 303, 404, 505, 606, 808, 883, 1010, 1212, 1515, 1616, 1766, 2020, 2424, 2649, 3030, 3532, 4040, 4415, 4848, 5298, 6060, 7064, 8080, 8830, 10596, 12120, 13245, 14128, 17660, 21192, 24240, 26490, 35320, 42384, 52980, 70640, 89183, 105960, 178366, 211920, 267549, 356732, 445915, 535098, 713464, 891830, 1070196, 1337745, 1426928, 1783660, 2140392, 2675490, 3567320, 4280784, 5350980, 7134640, 10701960, 21403920]

約数ペア:

[(1, 21403920), (2, 10701960), (3, 7134640), (4, 5350980), (5, 4280784), (6, 3567320), (8, 2675490), (10, 2140392), (12, 1783660), (15, 1426928), (16, 1337745), (20, 1070196), (24, 891830), (30, 713464), (40, 535098), (48, 445915), (60, 356732), (80, 267549), (101, 211920), (120, 178366), (202, 105960), (240, 89183), (303, 70640), (404, 52980), (505, 42384), (606, 35320), (808, 26490), (883, 24240), (1010, 21192), (1212, 17660), (1515, 14128), (1616, 13245), (1766, 12120), (2020, 10596), (2424, 8830), (2649, 8080), (3030, 7064), (3532, 6060), (4040, 5298), (4415, 4848)]