21911680

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:166

約数の個数: 128

約数和(自身を含む): 61591680

約数和(自身を除く): 39680000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 67, 70, 73, 80, 112, 128, 134, 140, 146, 160, 224, 268, 280, 292, 320, 335, 365, 448, 469, 511, 536, 560, 584, 640, 670, 730, 896, 938, 1022, 1072, 1120, 1168, 1340, 1460, 1876, 2044, 2144, 2240, 2336, 2345, 2555, 2680, 2920, 3752, 4088, 4288, 4480, 4672, 4690, 4891, 5110, 5360, 5840, 7504, 8176, 8576, 9344, 9380, 9782, 10220, 10720, 11680, 15008, 16352, 18760, 19564, 20440, 21440, 23360, 24455, 30016, 32704, 34237, 37520, 39128, 40880, 42880, 46720, 48910, 60032, 65408, 68474, 75040, 78256, 81760, 97820, 136948, 150080, 156512, 163520, 171185, 195640, 273896, 300160, 313024, 327040, 342370, 391280, 547792, 626048, 684740, 782560, 1095584, 1369480, 1565120, 2191168, 2738960, 3130240, 4382336, 5477920, 10955840, 21911680]

約数ペア:

[(1, 21911680), (2, 10955840), (4, 5477920), (5, 4382336), (7, 3130240), (8, 2738960), (10, 2191168), (14, 1565120), (16, 1369480), (20, 1095584), (28, 782560), (32, 684740), (35, 626048), (40, 547792), (56, 391280), (64, 342370), (67, 327040), (70, 313024), (73, 300160), (80, 273896), (112, 195640), (128, 171185), (134, 163520), (140, 156512), (146, 150080), (160, 136948), (224, 97820), (268, 81760), (280, 78256), (292, 75040), (320, 68474), (335, 65408), (365, 60032), (448, 48910), (469, 46720), (511, 42880), (536, 40880), (560, 39128), (584, 37520), (640, 34237), (670, 32704), (730, 30016), (896, 24455), (938, 23360), (1022, 21440), (1072, 20440), (1120, 19564), (1168, 18760), (1340, 16352), (1460, 15008), (1876, 11680), (2044, 10720), (2144, 10220), (2240, 9782), (2336, 9380), (2345, 9344), (2555, 8576), (2680, 8176), (2920, 7504), (3752, 5840), (4088, 5360), (4288, 5110), (4480, 4891), (4672, 4690)]