18866520

素因数分解:

$2^3\times 3^6\times 5^1\times {\mathrm{647}}^1$

素因数の和:676

約数の個数: 112

約数和(自身を含む): 63743760

約数和(自身を除く): 44877240

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 243, 270, 324, 360, 405, 486, 540, 647, 648, 729, 810, 972, 1080, 1215, 1294, 1458, 1620, 1941, 1944, 2430, 2588, 2916, 3235, 3240, 3645, 3882, 4860, 5176, 5823, 5832, 6470, 7290, 7764, 9705, 9720, 11646, 12940, 14580, 15528, 17469, 19410, 23292, 25880, 29115, 29160, 34938, 38820, 46584, 52407, 58230, 69876, 77640, 87345, 104814, 116460, 139752, 157221, 174690, 209628, 232920, 262035, 314442, 349380, 419256, 471663, 524070, 628884, 698760, 786105, 943326, 1048140, 1257768, 1572210, 1886652, 2096280, 2358315, 3144420, 3773304, 4716630, 6288840, 9433260, 18866520]

約数ペア:

[(1, 18866520), (2, 9433260), (3, 6288840), (4, 4716630), (5, 3773304), (6, 3144420), (8, 2358315), (9, 2096280), (10, 1886652), (12, 1572210), (15, 1257768), (18, 1048140), (20, 943326), (24, 786105), (27, 698760), (30, 628884), (36, 524070), (40, 471663), (45, 419256), (54, 349380), (60, 314442), (72, 262035), (81, 232920), (90, 209628), (108, 174690), (120, 157221), (135, 139752), (162, 116460), (180, 104814), (216, 87345), (243, 77640), (270, 69876), (324, 58230), (360, 52407), (405, 46584), (486, 38820), (540, 34938), (647, 29160), (648, 29115), (729, 25880), (810, 23292), (972, 19410), (1080, 17469), (1215, 15528), (1294, 14580), (1458, 12940), (1620, 11646), (1941, 9720), (1944, 9705), (2430, 7764), (2588, 7290), (2916, 6470), (3235, 5832), (3240, 5823), (3645, 5176), (3882, 4860)]