890702810

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1\times {\mathrm{239}}^1$

素因数の和:527

約数の個数: 64

約数和(自身を含む): 1698278400

約数和(自身を除く): 807575590

約数列:

[1, 2, 5, 10, 29, 58, 71, 142, 145, 181, 239, 290, 355, 362, 478, 710, 905, 1195, 1810, 2059, 2390, 4118, 5249, 6931, 10295, 10498, 12851, 13862, 16969, 20590, 25702, 26245, 33938, 34655, 43259, 52490, 64255, 69310, 84845, 86518, 128510, 169690, 216295, 372679, 432590, 492101, 745358, 984202, 1254511, 1863395, 2460505, 2509022, 3071389, 3726790, 4921010, 6142778, 6272555, 12545110, 15356945, 30713890, 89070281, 178140562, 445351405, 890702810]

約数ペア:

[(1, 890702810), (2, 445351405), (5, 178140562), (10, 89070281), (29, 30713890), (58, 15356945), (71, 12545110), (142, 6272555), (145, 6142778), (181, 4921010), (239, 3726790), (290, 3071389), (355, 2509022), (362, 2460505), (478, 1863395), (710, 1254511), (905, 984202), (1195, 745358), (1810, 492101), (2059, 432590), (2390, 372679), (4118, 216295), (5249, 169690), (6931, 128510), (10295, 86518), (10498, 84845), (12851, 69310), (13862, 64255), (16969, 52490), (20590, 43259), (25702, 34655), (26245, 33938)]