21000638890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7013}}^1\times {\mathrm{3889}}^1$

素因数の和:10927

約数の個数: 64

約数和(自身を含む): 47147546880

約数和(自身を除く): 26146907990

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 3889, 7013, 7778, 14026, 19445, 27223, 35065, 38890, 42779, 49091, 54446, 70130, 77143, 85558, 98182, 136115, 154286, 213895, 245455, 272230, 299453, 385715, 427790, 490910, 540001, 598906, 771430, 1080002, 1497265, 2700005, 2994530, 5400010, 27273557, 54547114, 136367785, 190914899, 272735570, 300009127, 381829798, 600018254, 954574495, 1500045635, 1909148990, 2100063889, 3000091270, 4200127778, 10500319445, 21000638890]

約数ペア:

[(1, 21000638890), (2, 10500319445), (5, 4200127778), (7, 3000091270), (10, 2100063889), (11, 1909148990), (14, 1500045635), (22, 954574495), (35, 600018254), (55, 381829798), (70, 300009127), (77, 272735570), (110, 190914899), (154, 136367785), (385, 54547114), (770, 27273557), (3889, 5400010), (7013, 2994530), (7778, 2700005), (14026, 1497265), (19445, 1080002), (27223, 771430), (35065, 598906), (38890, 540001), (42779, 490910), (49091, 427790), (54446, 385715), (70130, 299453), (77143, 272230), (85558, 245455), (98182, 213895), (136115, 154286)]