21963760

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{431}}^1$

素因数の和:471

約数の個数: 120

約数和(自身を含む): 64120896

約数和(自身を除く): 42157136

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 364, 392, 431, 455, 490, 520, 560, 637, 728, 784, 862, 910, 980, 1040, 1274, 1456, 1724, 1820, 1960, 2155, 2548, 3017, 3185, 3448, 3640, 3920, 4310, 5096, 5603, 6034, 6370, 6896, 7280, 8620, 10192, 11206, 12068, 12740, 15085, 17240, 21119, 22412, 24136, 25480, 28015, 30170, 34480, 39221, 42238, 44824, 48272, 50960, 56030, 60340, 78442, 84476, 89648, 105595, 112060, 120680, 156884, 168952, 196105, 211190, 224120, 241360, 274547, 313768, 337904, 392210, 422380, 448240, 549094, 627536, 784420, 844760, 1098188, 1372735, 1568840, 1689520, 2196376, 2745470, 3137680, 4392752, 5490940, 10981880, 21963760]

約数ペア:

[(1, 21963760), (2, 10981880), (4, 5490940), (5, 4392752), (7, 3137680), (8, 2745470), (10, 2196376), (13, 1689520), (14, 1568840), (16, 1372735), (20, 1098188), (26, 844760), (28, 784420), (35, 627536), (40, 549094), (49, 448240), (52, 422380), (56, 392210), (65, 337904), (70, 313768), (80, 274547), (91, 241360), (98, 224120), (104, 211190), (112, 196105), (130, 168952), (140, 156884), (182, 120680), (196, 112060), (208, 105595), (245, 89648), (260, 84476), (280, 78442), (364, 60340), (392, 56030), (431, 50960), (455, 48272), (490, 44824), (520, 42238), (560, 39221), (637, 34480), (728, 30170), (784, 28015), (862, 25480), (910, 24136), (980, 22412), (1040, 21119), (1274, 17240), (1456, 15085), (1724, 12740), (1820, 12068), (1960, 11206), (2155, 10192), (2548, 8620), (3017, 7280), (3185, 6896), (3448, 6370), (3640, 6034), (3920, 5603), (4310, 5096)]