21404900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:126

約数の個数: 108

約数和(自身を含む): 53681460

約数和(自身を除く): 32276560

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 29, 44, 50, 55, 58, 61, 100, 110, 116, 121, 122, 145, 220, 242, 244, 275, 290, 305, 319, 484, 550, 580, 605, 610, 638, 671, 725, 1100, 1210, 1220, 1276, 1342, 1450, 1525, 1595, 1769, 2420, 2684, 2900, 3025, 3050, 3190, 3355, 3509, 3538, 6050, 6100, 6380, 6710, 7018, 7076, 7381, 7975, 8845, 12100, 13420, 14036, 14762, 15950, 16775, 17545, 17690, 19459, 29524, 31900, 33550, 35090, 35380, 36905, 38918, 44225, 67100, 70180, 73810, 77836, 87725, 88450, 97295, 147620, 175450, 176900, 184525, 194590, 214049, 350900, 369050, 389180, 428098, 486475, 738100, 856196, 972950, 1070245, 1945900, 2140490, 4280980, 5351225, 10702450, 21404900]

約数ペア:

[(1, 21404900), (2, 10702450), (4, 5351225), (5, 4280980), (10, 2140490), (11, 1945900), (20, 1070245), (22, 972950), (25, 856196), (29, 738100), (44, 486475), (50, 428098), (55, 389180), (58, 369050), (61, 350900), (100, 214049), (110, 194590), (116, 184525), (121, 176900), (122, 175450), (145, 147620), (220, 97295), (242, 88450), (244, 87725), (275, 77836), (290, 73810), (305, 70180), (319, 67100), (484, 44225), (550, 38918), (580, 36905), (605, 35380), (610, 35090), (638, 33550), (671, 31900), (725, 29524), (1100, 19459), (1210, 17690), (1220, 17545), (1276, 16775), (1342, 15950), (1450, 14762), (1525, 14036), (1595, 13420), (1769, 12100), (2420, 8845), (2684, 7975), (2900, 7381), (3025, 7076), (3050, 7018), (3190, 6710), (3355, 6380), (3509, 6100), (3538, 6050)]