129856820

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1\times {\mathrm{571}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 278486208

約数和(自身を除く): 148629388

約数列:

[1, 2, 4, 5, 10, 20, 83, 137, 166, 274, 332, 415, 548, 571, 685, 830, 1142, 1370, 1660, 2284, 2740, 2855, 5710, 11371, 11420, 22742, 45484, 47393, 56855, 78227, 94786, 113710, 156454, 189572, 227420, 236965, 312908, 391135, 473930, 782270, 947860, 1564540, 6492841, 12985682, 25971364, 32464205, 64928410, 129856820]

約数ペア:

[(1, 129856820), (2, 64928410), (4, 32464205), (5, 25971364), (10, 12985682), (20, 6492841), (83, 1564540), (137, 947860), (166, 782270), (274, 473930), (332, 391135), (415, 312908), (548, 236965), (571, 227420), (685, 189572), (830, 156454), (1142, 113710), (1370, 94786), (1660, 78227), (2284, 56855), (2740, 47393), (2855, 45484), (5710, 22742), (11371, 11420)]