18179920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:380

約数の個数: 80

約数和(自身を含む): 46907712

約数和(自身を除く): 28727792

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 73, 80, 88, 110, 146, 176, 220, 283, 292, 365, 440, 566, 584, 730, 803, 880, 1132, 1168, 1415, 1460, 1606, 2264, 2830, 2920, 3113, 3212, 4015, 4528, 5660, 5840, 6226, 6424, 8030, 11320, 12452, 12848, 15565, 16060, 20659, 22640, 24904, 31130, 32120, 41318, 49808, 62260, 64240, 82636, 103295, 124520, 165272, 206590, 227249, 249040, 330544, 413180, 454498, 826360, 908996, 1136245, 1652720, 1817992, 2272490, 3635984, 4544980, 9089960, 18179920]

約数ペア:

[(1, 18179920), (2, 9089960), (4, 4544980), (5, 3635984), (8, 2272490), (10, 1817992), (11, 1652720), (16, 1136245), (20, 908996), (22, 826360), (40, 454498), (44, 413180), (55, 330544), (73, 249040), (80, 227249), (88, 206590), (110, 165272), (146, 124520), (176, 103295), (220, 82636), (283, 64240), (292, 62260), (365, 49808), (440, 41318), (566, 32120), (584, 31130), (730, 24904), (803, 22640), (880, 20659), (1132, 16060), (1168, 15565), (1415, 12848), (1460, 12452), (1606, 11320), (2264, 8030), (2830, 6424), (2920, 6226), (3113, 5840), (3212, 5660), (4015, 4528)]