1689997472660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{6870467}}^1$

素因数の和:6870741

約数の個数: 72

約数和(自身を含む): 4144870898784

約数和(自身を除く): 2454873426124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 251, 490, 502, 980, 1004, 1255, 1757, 2510, 3514, 5020, 7028, 8785, 12299, 17570, 24598, 35140, 49196, 61495, 122990, 245980, 6870467, 13740934, 27481868, 34352335, 48093269, 68704670, 96186538, 137409340, 192373076, 240466345, 336652883, 480932690, 673305766, 961865380, 1346611532, 1683264415, 1724487217, 3366528830, 3448974434, 6733057660, 6897948868, 8622436085, 12071410519, 17244872170, 24142821038, 34489744340, 48285642076, 60357052595, 84499873633, 120714105190, 168999747266, 241428210380, 337999494532, 422499368165, 844998736330, 1689997472660]

約数ペア:

[(1, 1689997472660), (2, 844998736330), (4, 422499368165), (5, 337999494532), (7, 241428210380), (10, 168999747266), (14, 120714105190), (20, 84499873633), (28, 60357052595), (35, 48285642076), (49, 34489744340), (70, 24142821038), (98, 17244872170), (140, 12071410519), (196, 8622436085), (245, 6897948868), (251, 6733057660), (490, 3448974434), (502, 3366528830), (980, 1724487217), (1004, 1683264415), (1255, 1346611532), (1757, 961865380), (2510, 673305766), (3514, 480932690), (5020, 336652883), (7028, 240466345), (8785, 192373076), (12299, 137409340), (17570, 96186538), (24598, 68704670), (35140, 48093269), (49196, 34352335), (61495, 27481868), (122990, 13740934), (245980, 6870467)]