21829840

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2083}}^1$

素因数の和:2227

約数の個数: 40

約数和(自身を含む): 51166368

約数和(自身を除く): 29336528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2083, 2096, 2620, 4166, 5240, 8332, 10415, 10480, 16664, 20830, 33328, 41660, 83320, 166640, 272873, 545746, 1091492, 1364365, 2182984, 2728730, 4365968, 5457460, 10914920, 21829840]

約数ペア:

[(1, 21829840), (2, 10914920), (4, 5457460), (5, 4365968), (8, 2728730), (10, 2182984), (16, 1364365), (20, 1091492), (40, 545746), (80, 272873), (131, 166640), (262, 83320), (524, 41660), (655, 33328), (1048, 20830), (1310, 16664), (2083, 10480), (2096, 10415), (2620, 8332), (4166, 5240)]