868996840

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^2\times {\mathrm{79}}^2$

素因数の和:287

約数の個数: 72

約数和(自身を含む): 2014439490

約数和(自身を除く): 1145442650

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 79, 118, 158, 236, 295, 316, 395, 472, 590, 632, 790, 1180, 1580, 2360, 3160, 3481, 4661, 6241, 6962, 9322, 12482, 13924, 17405, 18644, 23305, 24964, 27848, 31205, 34810, 37288, 46610, 49928, 62410, 69620, 93220, 124820, 139240, 186440, 249640, 274999, 368219, 549998, 736438, 1099996, 1374995, 1472876, 1841095, 2199992, 2749990, 2945752, 3682190, 5499980, 7364380, 10999960, 14728760, 21724921, 43449842, 86899684, 108624605, 173799368, 217249210, 434498420, 868996840]

約数ペア:

[(1, 868996840), (2, 434498420), (4, 217249210), (5, 173799368), (8, 108624605), (10, 86899684), (20, 43449842), (40, 21724921), (59, 14728760), (79, 10999960), (118, 7364380), (158, 5499980), (236, 3682190), (295, 2945752), (316, 2749990), (395, 2199992), (472, 1841095), (590, 1472876), (632, 1374995), (790, 1099996), (1180, 736438), (1580, 549998), (2360, 368219), (3160, 274999), (3481, 249640), (4661, 186440), (6241, 139240), (6962, 124820), (9322, 93220), (12482, 69620), (13924, 62410), (17405, 49928), (18644, 46610), (23305, 37288), (24964, 34810), (27848, 31205)]