21609810460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{711317}}^1$

素因数の和:711371

約数の個数: 72

約数和(自身を含む): 54492649344

約数和(自身を除く): 32882838884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 3038, 4340, 6076, 7595, 15190, 30380, 711317, 1422634, 2845268, 3556585, 4979219, 7113170, 9958438, 14226340, 19916876, 22050827, 24896095, 34854533, 44101654, 49792190, 69709066, 88203308, 99584380, 110254135, 139418132, 154355789, 174272665, 220508270, 308711578, 348545330, 441016540, 617423156, 697090660, 771778945, 1080490523, 1543557890, 2160981046, 3087115780, 4321962092, 5402452615, 10804905230, 21609810460]

約数ペア:

[(1, 21609810460), (2, 10804905230), (4, 5402452615), (5, 4321962092), (7, 3087115780), (10, 2160981046), (14, 1543557890), (20, 1080490523), (28, 771778945), (31, 697090660), (35, 617423156), (49, 441016540), (62, 348545330), (70, 308711578), (98, 220508270), (124, 174272665), (140, 154355789), (155, 139418132), (196, 110254135), (217, 99584380), (245, 88203308), (310, 69709066), (434, 49792190), (490, 44101654), (620, 34854533), (868, 24896095), (980, 22050827), (1085, 19916876), (1519, 14226340), (2170, 9958438), (3038, 7113170), (4340, 4979219), (6076, 3556585), (7595, 2845268), (15190, 1422634), (30380, 711317)]