21788960

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3167}}^1$

素因数の和:3225

約数の個数: 48

約数和(自身を含む): 52690176

約数和(自身を除く): 30901216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 3167, 3440, 6334, 6880, 12668, 15835, 25336, 31670, 50672, 63340, 101344, 126680, 136181, 253360, 272362, 506720, 544724, 680905, 1089448, 1361810, 2178896, 2723620, 4357792, 5447240, 10894480, 21788960]

約数ペア:

[(1, 21788960), (2, 10894480), (4, 5447240), (5, 4357792), (8, 2723620), (10, 2178896), (16, 1361810), (20, 1089448), (32, 680905), (40, 544724), (43, 506720), (80, 272362), (86, 253360), (160, 136181), (172, 126680), (215, 101344), (344, 63340), (430, 50672), (688, 31670), (860, 25336), (1376, 15835), (1720, 12668), (3167, 6880), (3440, 6334)]