21255850

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{5521}}^1$

素因数の和:5551

約数の個数: 48

約数和(自身を含む): 49300416

約数和(自身を除く): 28044566

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 77, 110, 154, 175, 275, 350, 385, 550, 770, 1925, 3850, 5521, 11042, 27605, 38647, 55210, 60731, 77294, 121462, 138025, 193235, 276050, 303655, 386470, 425117, 607310, 850234, 966175, 1518275, 1932350, 2125585, 3036550, 4251170, 10627925, 21255850]

約数ペア:

[(1, 21255850), (2, 10627925), (5, 4251170), (7, 3036550), (10, 2125585), (11, 1932350), (14, 1518275), (22, 966175), (25, 850234), (35, 607310), (50, 425117), (55, 386470), (70, 303655), (77, 276050), (110, 193235), (154, 138025), (175, 121462), (275, 77294), (350, 60731), (385, 55210), (550, 38647), (770, 27605), (1925, 11042), (3850, 5521)]