15721040

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4793}}^1$

素因数の和:4847

約数の個数: 40

約数和(自身を含む): 37450728

約数和(自身を除く): 21729688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 4793, 9586, 19172, 23965, 38344, 47930, 76688, 95860, 191720, 196513, 383440, 393026, 786052, 982565, 1572104, 1965130, 3144208, 3930260, 7860520, 15721040]

約数ペア:

[(1, 15721040), (2, 7860520), (4, 3930260), (5, 3144208), (8, 1965130), (10, 1572104), (16, 982565), (20, 786052), (40, 393026), (41, 383440), (80, 196513), (82, 191720), (164, 95860), (205, 76688), (328, 47930), (410, 38344), (656, 23965), (820, 19172), (1640, 9586), (3280, 4793)]