21506880

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:584

約数の個数: 112

約数和(自身を含む): 70006464

約数和(自身を除く): 48499584

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 43, 48, 60, 64, 80, 86, 96, 120, 129, 160, 172, 192, 215, 240, 258, 320, 344, 430, 480, 516, 521, 645, 688, 860, 960, 1032, 1042, 1290, 1376, 1563, 1720, 2064, 2084, 2580, 2605, 2752, 3126, 3440, 4128, 4168, 5160, 5210, 6252, 6880, 7815, 8256, 8336, 10320, 10420, 12504, 13760, 15630, 16672, 20640, 20840, 22403, 25008, 31260, 33344, 41280, 41680, 44806, 50016, 62520, 67209, 83360, 89612, 100032, 112015, 125040, 134418, 166720, 179224, 224030, 250080, 268836, 336045, 358448, 448060, 500160, 537672, 672090, 716896, 896120, 1075344, 1344180, 1433792, 1792240, 2150688, 2688360, 3584480, 4301376, 5376720, 7168960, 10753440, 21506880]

約数ペア:

[(1, 21506880), (2, 10753440), (3, 7168960), (4, 5376720), (5, 4301376), (6, 3584480), (8, 2688360), (10, 2150688), (12, 1792240), (15, 1433792), (16, 1344180), (20, 1075344), (24, 896120), (30, 716896), (32, 672090), (40, 537672), (43, 500160), (48, 448060), (60, 358448), (64, 336045), (80, 268836), (86, 250080), (96, 224030), (120, 179224), (129, 166720), (160, 134418), (172, 125040), (192, 112015), (215, 100032), (240, 89612), (258, 83360), (320, 67209), (344, 62520), (430, 50016), (480, 44806), (516, 41680), (521, 41280), (645, 33344), (688, 31260), (860, 25008), (960, 22403), (1032, 20840), (1042, 20640), (1290, 16672), (1376, 15630), (1563, 13760), (1720, 12504), (2064, 10420), (2084, 10320), (2580, 8336), (2605, 8256), (2752, 7815), (3126, 6880), (3440, 6252), (4128, 5210), (4168, 5160)]