20804916860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1633039}}^1$

素因数の和:1633075

約数の個数: 72

約数和(自身を含む): 54732968640

約数和(自身を除く): 33928051780

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2548, 3185, 6370, 12740, 1633039, 3266078, 6532156, 8165195, 11431273, 16330390, 21229507, 22862546, 32660780, 42459014, 45725092, 57156365, 80018911, 84918028, 106147535, 114312730, 148606549, 160037822, 212295070, 228625460, 297213098, 320075644, 400094555, 424590140, 594426196, 743032745, 800189110, 1040245843, 1486065490, 1600378220, 2080491686, 2972130980, 4160983372, 5201229215, 10402458430, 20804916860]

約数ペア:

[(1, 20804916860), (2, 10402458430), (4, 5201229215), (5, 4160983372), (7, 2972130980), (10, 2080491686), (13, 1600378220), (14, 1486065490), (20, 1040245843), (26, 800189110), (28, 743032745), (35, 594426196), (49, 424590140), (52, 400094555), (65, 320075644), (70, 297213098), (91, 228625460), (98, 212295070), (130, 160037822), (140, 148606549), (182, 114312730), (196, 106147535), (245, 84918028), (260, 80018911), (364, 57156365), (455, 45725092), (490, 42459014), (637, 32660780), (910, 22862546), (980, 21229507), (1274, 16330390), (1820, 11431273), (2548, 8165195), (3185, 6532156), (6370, 3266078), (12740, 1633039)]