21798880

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3323}}^1$

素因数の和:3379

約数の個数: 48

約数和(自身を含む): 52771824

約数和(自身を除く): 30972944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3280, 3323, 6560, 6646, 13292, 16615, 26584, 33230, 53168, 66460, 106336, 132920, 136243, 265840, 272486, 531680, 544972, 681215, 1089944, 1362430, 2179888, 2724860, 4359776, 5449720, 10899440, 21798880]

約数ペア:

[(1, 21798880), (2, 10899440), (4, 5449720), (5, 4359776), (8, 2724860), (10, 2179888), (16, 1362430), (20, 1089944), (32, 681215), (40, 544972), (41, 531680), (80, 272486), (82, 265840), (160, 136243), (164, 132920), (205, 106336), (328, 66460), (410, 53168), (656, 33230), (820, 26584), (1312, 16615), (1640, 13292), (3280, 6646), (3323, 6560)]