21485360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:382

約数の個数: 80

約数和(自身を含む): 54725664

約数和(自身を除く): 33240304

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 73, 80, 104, 130, 146, 208, 260, 283, 292, 365, 520, 566, 584, 730, 949, 1040, 1132, 1168, 1415, 1460, 1898, 2264, 2830, 2920, 3679, 3796, 4528, 4745, 5660, 5840, 7358, 7592, 9490, 11320, 14716, 15184, 18395, 18980, 20659, 22640, 29432, 36790, 37960, 41318, 58864, 73580, 75920, 82636, 103295, 147160, 165272, 206590, 268567, 294320, 330544, 413180, 537134, 826360, 1074268, 1342835, 1652720, 2148536, 2685670, 4297072, 5371340, 10742680, 21485360]

約数ペア:

[(1, 21485360), (2, 10742680), (4, 5371340), (5, 4297072), (8, 2685670), (10, 2148536), (13, 1652720), (16, 1342835), (20, 1074268), (26, 826360), (40, 537134), (52, 413180), (65, 330544), (73, 294320), (80, 268567), (104, 206590), (130, 165272), (146, 147160), (208, 103295), (260, 82636), (283, 75920), (292, 73580), (365, 58864), (520, 41318), (566, 37960), (584, 36790), (730, 29432), (949, 22640), (1040, 20659), (1132, 18980), (1168, 18395), (1415, 15184), (1460, 14716), (1898, 11320), (2264, 9490), (2830, 7592), (2920, 7358), (3679, 5840), (3796, 5660), (4528, 4745)]