21914520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:225

約数の個数: 128

約数和(自身を含む): 69949440

約数和(自身を除く): 48034920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 43, 60, 62, 86, 93, 120, 124, 129, 137, 155, 172, 186, 215, 248, 258, 274, 310, 344, 372, 411, 430, 465, 516, 548, 620, 645, 685, 744, 822, 860, 930, 1032, 1096, 1240, 1290, 1333, 1370, 1644, 1720, 1860, 2055, 2580, 2666, 2740, 3288, 3720, 3999, 4110, 4247, 5160, 5332, 5480, 5891, 6665, 7998, 8220, 8494, 10664, 11782, 12741, 13330, 15996, 16440, 16988, 17673, 19995, 21235, 23564, 25482, 26660, 29455, 31992, 33976, 35346, 39990, 42470, 47128, 50964, 53320, 58910, 63705, 70692, 79980, 84940, 88365, 101928, 117820, 127410, 141384, 159960, 169880, 176730, 182621, 235640, 254820, 353460, 365242, 509640, 547863, 706920, 730484, 913105, 1095726, 1460968, 1826210, 2191452, 2739315, 3652420, 4382904, 5478630, 7304840, 10957260, 21914520]

約数ペア:

[(1, 21914520), (2, 10957260), (3, 7304840), (4, 5478630), (5, 4382904), (6, 3652420), (8, 2739315), (10, 2191452), (12, 1826210), (15, 1460968), (20, 1095726), (24, 913105), (30, 730484), (31, 706920), (40, 547863), (43, 509640), (60, 365242), (62, 353460), (86, 254820), (93, 235640), (120, 182621), (124, 176730), (129, 169880), (137, 159960), (155, 141384), (172, 127410), (186, 117820), (215, 101928), (248, 88365), (258, 84940), (274, 79980), (310, 70692), (344, 63705), (372, 58910), (411, 53320), (430, 50964), (465, 47128), (516, 42470), (548, 39990), (620, 35346), (645, 33976), (685, 31992), (744, 29455), (822, 26660), (860, 25482), (930, 23564), (1032, 21235), (1096, 19995), (1240, 17673), (1290, 16988), (1333, 16440), (1370, 15996), (1644, 13330), (1720, 12741), (1860, 11782), (2055, 10664), (2580, 8494), (2666, 8220), (2740, 7998), (3288, 6665), (3720, 5891), (3999, 5480), (4110, 5332), (4247, 5160)]