21573825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 45830400

約数和(自身を除く): 24256575

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 29, 35, 39, 65, 75, 87, 91, 105, 109, 145, 175, 195, 203, 273, 325, 327, 377, 435, 455, 525, 545, 609, 725, 763, 975, 1015, 1131, 1365, 1417, 1635, 1885, 2175, 2275, 2289, 2639, 2725, 3045, 3161, 3815, 4251, 5075, 5655, 6825, 7085, 7917, 8175, 9425, 9483, 9919, 11445, 13195, 15225, 15805, 19075, 21255, 22127, 28275, 29757, 35425, 39585, 41093, 47415, 49595, 57225, 65975, 66381, 79025, 106275, 110635, 123279, 148785, 197925, 205465, 237075, 247975, 287651, 331905, 553175, 616395, 743925, 862953, 1027325, 1438255, 1659525, 3081975, 4314765, 7191275, 21573825]

約数ペア:

[(1, 21573825), (3, 7191275), (5, 4314765), (7, 3081975), (13, 1659525), (15, 1438255), (21, 1027325), (25, 862953), (29, 743925), (35, 616395), (39, 553175), (65, 331905), (75, 287651), (87, 247975), (91, 237075), (105, 205465), (109, 197925), (145, 148785), (175, 123279), (195, 110635), (203, 106275), (273, 79025), (325, 66381), (327, 65975), (377, 57225), (435, 49595), (455, 47415), (525, 41093), (545, 39585), (609, 35425), (725, 29757), (763, 28275), (975, 22127), (1015, 21255), (1131, 19075), (1365, 15805), (1417, 15225), (1635, 13195), (1885, 11445), (2175, 9919), (2275, 9483), (2289, 9425), (2639, 8175), (2725, 7917), (3045, 7085), (3161, 6825), (3815, 5655), (4251, 5075)]