21861040

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^2$

素因数の和:254

約数の個数: 60

約数和(自身を含む): 53527824

約数和(自身を除く): 31666784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 109, 115, 184, 218, 230, 368, 436, 460, 545, 872, 920, 1090, 1744, 1840, 2180, 2507, 4360, 5014, 8720, 10028, 11881, 12535, 20056, 23762, 25070, 40112, 47524, 50140, 59405, 95048, 100280, 118810, 190096, 200560, 237620, 273263, 475240, 546526, 950480, 1093052, 1366315, 2186104, 2732630, 4372208, 5465260, 10930520, 21861040]

約数ペア:

[(1, 21861040), (2, 10930520), (4, 5465260), (5, 4372208), (8, 2732630), (10, 2186104), (16, 1366315), (20, 1093052), (23, 950480), (40, 546526), (46, 475240), (80, 273263), (92, 237620), (109, 200560), (115, 190096), (184, 118810), (218, 100280), (230, 95048), (368, 59405), (436, 50140), (460, 47524), (545, 40112), (872, 25070), (920, 23762), (1090, 20056), (1744, 12535), (1840, 11881), (2180, 10028), (2507, 8720), (4360, 5014)]