21384825

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2$

素因数の和:84

約数の個数: 108

約数和(自身を含む): 46903248

約数和(自身を除く): 25518423

約数列:

[1, 3, 5, 7, 11, 15, 21, 23, 25, 33, 35, 49, 55, 69, 75, 77, 105, 115, 147, 161, 165, 175, 231, 245, 253, 275, 345, 385, 483, 525, 529, 539, 575, 735, 759, 805, 825, 1127, 1155, 1225, 1265, 1587, 1617, 1725, 1771, 1925, 2415, 2645, 2695, 3381, 3675, 3703, 3795, 4025, 5313, 5635, 5775, 5819, 6325, 7935, 8085, 8855, 11109, 12075, 12397, 13225, 13475, 16905, 17457, 18515, 18975, 25921, 26565, 28175, 29095, 37191, 39675, 40425, 40733, 44275, 55545, 61985, 77763, 84525, 87285, 92575, 122199, 129605, 132825, 145475, 185955, 203665, 277725, 285131, 309925, 388815, 436425, 610995, 648025, 855393, 929775, 1018325, 1425655, 1944075, 3054975, 4276965, 7128275, 21384825]

約数ペア:

[(1, 21384825), (3, 7128275), (5, 4276965), (7, 3054975), (11, 1944075), (15, 1425655), (21, 1018325), (23, 929775), (25, 855393), (33, 648025), (35, 610995), (49, 436425), (55, 388815), (69, 309925), (75, 285131), (77, 277725), (105, 203665), (115, 185955), (147, 145475), (161, 132825), (165, 129605), (175, 122199), (231, 92575), (245, 87285), (253, 84525), (275, 77763), (345, 61985), (385, 55545), (483, 44275), (525, 40733), (529, 40425), (539, 39675), (575, 37191), (735, 29095), (759, 28175), (805, 26565), (825, 25921), (1127, 18975), (1155, 18515), (1225, 17457), (1265, 16905), (1587, 13475), (1617, 13225), (1725, 12397), (1771, 12075), (1925, 11109), (2415, 8855), (2645, 8085), (2695, 7935), (3381, 6325), (3675, 5819), (3703, 5775), (3795, 5635), (4025, 5313)]