21000852488

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2005429}}^1$

素因数の和:2005470

約数の個数: 64

約数和(自身を含む): 51980745600

約数和(自身を除く): 30979893112

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 34, 44, 56, 68, 77, 88, 119, 136, 154, 187, 238, 308, 374, 476, 616, 748, 952, 1309, 1496, 2618, 5236, 10472, 2005429, 4010858, 8021716, 14038003, 16043432, 22059719, 28076006, 34092293, 44119438, 56152012, 68184586, 88238876, 112304024, 136369172, 154418033, 176477752, 238646051, 272738344, 308836066, 375015223, 477292102, 617672132, 750030446, 954584204, 1235344264, 1500060892, 1909168408, 2625106561, 3000121784, 5250213122, 10500426244, 21000852488]

約数ペア:

[(1, 21000852488), (2, 10500426244), (4, 5250213122), (7, 3000121784), (8, 2625106561), (11, 1909168408), (14, 1500060892), (17, 1235344264), (22, 954584204), (28, 750030446), (34, 617672132), (44, 477292102), (56, 375015223), (68, 308836066), (77, 272738344), (88, 238646051), (119, 176477752), (136, 154418033), (154, 136369172), (187, 112304024), (238, 88238876), (308, 68184586), (374, 56152012), (476, 44119438), (616, 34092293), (748, 28076006), (952, 22059719), (1309, 16043432), (1496, 14038003), (2618, 8021716), (5236, 4010858), (10472, 2005429)]