81864120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{541}}^1$

素因数の和:665

約数の個数: 128

約数和(自身を含む): 267704640

約数和(自身を除く): 185840520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 97, 104, 120, 130, 156, 194, 195, 260, 291, 312, 388, 390, 485, 520, 541, 582, 776, 780, 970, 1082, 1164, 1261, 1455, 1560, 1623, 1940, 2164, 2328, 2522, 2705, 2910, 3246, 3783, 3880, 4328, 5044, 5410, 5820, 6305, 6492, 7033, 7566, 8115, 10088, 10820, 11640, 12610, 12984, 14066, 15132, 16230, 18915, 21099, 21640, 25220, 28132, 30264, 32460, 35165, 37830, 42198, 50440, 52477, 56264, 64920, 70330, 75660, 84396, 104954, 105495, 140660, 151320, 157431, 168792, 209908, 210990, 262385, 281320, 314862, 419816, 421980, 524770, 629724, 682201, 787155, 843960, 1049540, 1259448, 1364402, 1574310, 2046603, 2099080, 2728804, 3148620, 3411005, 4093206, 5457608, 6297240, 6822010, 8186412, 10233015, 13644020, 16372824, 20466030, 27288040, 40932060, 81864120]

約数ペア:

[(1, 81864120), (2, 40932060), (3, 27288040), (4, 20466030), (5, 16372824), (6, 13644020), (8, 10233015), (10, 8186412), (12, 6822010), (13, 6297240), (15, 5457608), (20, 4093206), (24, 3411005), (26, 3148620), (30, 2728804), (39, 2099080), (40, 2046603), (52, 1574310), (60, 1364402), (65, 1259448), (78, 1049540), (97, 843960), (104, 787155), (120, 682201), (130, 629724), (156, 524770), (194, 421980), (195, 419816), (260, 314862), (291, 281320), (312, 262385), (388, 210990), (390, 209908), (485, 168792), (520, 157431), (541, 151320), (582, 140660), (776, 105495), (780, 104954), (970, 84396), (1082, 75660), (1164, 70330), (1261, 64920), (1455, 56264), (1560, 52477), (1623, 50440), (1940, 42198), (2164, 37830), (2328, 35165), (2522, 32460), (2705, 30264), (2910, 28132), (3246, 25220), (3783, 21640), (3880, 21099), (4328, 18915), (5044, 16230), (5410, 15132), (5820, 14066), (6305, 12984), (6492, 12610), (7033, 11640), (7566, 10820), (8115, 10088)]