21000718548

素因数分解:

$2^2\times 3^2\times {\mathrm{73}}^1\times {\mathrm{2719}}^1\times {\mathrm{2939}}^1$

素因数の和:5741

約数の個数: 72

約数和(自身を含む): 53850451200

約数和(自身を除く): 32849732652

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 73, 146, 219, 292, 438, 657, 876, 1314, 2628, 2719, 2939, 5438, 5878, 8157, 8817, 10876, 11756, 16314, 17634, 24471, 26451, 32628, 35268, 48942, 52902, 97884, 105804, 198487, 214547, 396974, 429094, 595461, 643641, 793948, 858188, 1190922, 1287282, 1786383, 1930923, 2381844, 2574564, 3572766, 3861846, 7145532, 7723692, 7991141, 15982282, 23973423, 31964564, 47946846, 71920269, 95893692, 143840538, 287681076, 583353293, 1166706586, 1750059879, 2333413172, 3500119758, 5250179637, 7000239516, 10500359274, 21000718548]

約数ペア:

[(1, 21000718548), (2, 10500359274), (3, 7000239516), (4, 5250179637), (6, 3500119758), (9, 2333413172), (12, 1750059879), (18, 1166706586), (36, 583353293), (73, 287681076), (146, 143840538), (219, 95893692), (292, 71920269), (438, 47946846), (657, 31964564), (876, 23973423), (1314, 15982282), (2628, 7991141), (2719, 7723692), (2939, 7145532), (5438, 3861846), (5878, 3572766), (8157, 2574564), (8817, 2381844), (10876, 1930923), (11756, 1786383), (16314, 1287282), (17634, 1190922), (24471, 858188), (26451, 793948), (32628, 643641), (35268, 595461), (48942, 429094), (52902, 396974), (97884, 214547), (105804, 198487)]