21097090480

素因数分解:

$2^4\times 5^1\times {\mathrm{3491}}^1\times {\mathrm{75541}}^1$

素因数の和:79045

約数の個数: 40

約数和(自身を含む): 49065435504

約数和(自身を除く): 27968345024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3491, 6982, 13964, 17455, 27928, 34910, 55856, 69820, 75541, 139640, 151082, 279280, 302164, 377705, 604328, 755410, 1208656, 1510820, 3021640, 6043280, 263713631, 527427262, 1054854524, 1318568155, 2109709048, 2637136310, 4219418096, 5274272620, 10548545240, 21097090480]

約数ペア:

[(1, 21097090480), (2, 10548545240), (4, 5274272620), (5, 4219418096), (8, 2637136310), (10, 2109709048), (16, 1318568155), (20, 1054854524), (40, 527427262), (80, 263713631), (3491, 6043280), (6982, 3021640), (13964, 1510820), (17455, 1208656), (27928, 755410), (34910, 604328), (55856, 377705), (69820, 302164), (75541, 279280), (139640, 151082)]