21827660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1493}}^1$

素因数の和:1562

約数の個数: 48

約数和(自身を含む): 49696416

約数和(自身を除く): 27868756

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 1462, 1493, 2924, 2986, 3655, 5972, 7310, 7465, 14620, 14930, 25381, 29860, 50762, 64199, 101524, 126905, 128398, 253810, 256796, 320995, 507620, 641990, 1091383, 1283980, 2182766, 4365532, 5456915, 10913830, 21827660]

約数ペア:

[(1, 21827660), (2, 10913830), (4, 5456915), (5, 4365532), (10, 2182766), (17, 1283980), (20, 1091383), (34, 641990), (43, 507620), (68, 320995), (85, 256796), (86, 253810), (170, 128398), (172, 126905), (215, 101524), (340, 64199), (430, 50762), (731, 29860), (860, 25381), (1462, 14930), (1493, 14620), (2924, 7465), (2986, 7310), (3655, 5972)]