21669760

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{691}}^1$

素因数の和:724

約数の個数: 96

約数和(自身を含む): 60349320

約数和(自身を除く): 38679560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 280, 320, 392, 448, 490, 560, 640, 691, 784, 896, 980, 1120, 1382, 1568, 1960, 2240, 2764, 3136, 3455, 3920, 4480, 4837, 5528, 6272, 6910, 7840, 9674, 11056, 13820, 15680, 19348, 22112, 24185, 27640, 31360, 33859, 38696, 44224, 48370, 55280, 67718, 77392, 88448, 96740, 110560, 135436, 154784, 169295, 193480, 221120, 270872, 309568, 338590, 386960, 442240, 541744, 619136, 677180, 773920, 1083488, 1354360, 1547840, 2166976, 2708720, 3095680, 4333952, 5417440, 10834880, 21669760]

約数ペア:

[(1, 21669760), (2, 10834880), (4, 5417440), (5, 4333952), (7, 3095680), (8, 2708720), (10, 2166976), (14, 1547840), (16, 1354360), (20, 1083488), (28, 773920), (32, 677180), (35, 619136), (40, 541744), (49, 442240), (56, 386960), (64, 338590), (70, 309568), (80, 270872), (98, 221120), (112, 193480), (128, 169295), (140, 154784), (160, 135436), (196, 110560), (224, 96740), (245, 88448), (280, 77392), (320, 67718), (392, 55280), (448, 48370), (490, 44224), (560, 38696), (640, 33859), (691, 31360), (784, 27640), (896, 24185), (980, 22112), (1120, 19348), (1382, 15680), (1568, 13820), (1960, 11056), (2240, 9674), (2764, 7840), (3136, 6910), (3455, 6272), (3920, 5528), (4480, 4837)]