21569920

素因数分解:

$2^7\times 5^1\times {\mathrm{33703}}^1$

素因数の和:33722

約数の個数: 32

約数和(自身を含む): 51567120

約数和(自身を除く): 29997200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33703, 67406, 134812, 168515, 269624, 337030, 539248, 674060, 1078496, 1348120, 2156992, 2696240, 4313984, 5392480, 10784960, 21569920]

約数ペア:

[(1, 21569920), (2, 10784960), (4, 5392480), (5, 4313984), (8, 2696240), (10, 2156992), (16, 1348120), (20, 1078496), (32, 674060), (40, 539248), (64, 337030), (80, 269624), (128, 168515), (160, 134812), (320, 67406), (640, 33703)]