157777420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{647}}^1$

素因数の和:882

約数の個数: 48

約数和(自身を含む): 338022720

約数和(自身を除く): 180245300

約数列:

[1, 2, 4, 5, 10, 20, 89, 137, 178, 274, 356, 445, 548, 647, 685, 890, 1294, 1370, 1780, 2588, 2740, 3235, 6470, 12193, 12940, 24386, 48772, 57583, 60965, 88639, 115166, 121930, 177278, 230332, 243860, 287915, 354556, 443195, 575830, 886390, 1151660, 1772780, 7888871, 15777742, 31555484, 39444355, 78888710, 157777420]

約数ペア:

[(1, 157777420), (2, 78888710), (4, 39444355), (5, 31555484), (10, 15777742), (20, 7888871), (89, 1772780), (137, 1151660), (178, 886390), (274, 575830), (356, 443195), (445, 354556), (548, 287915), (647, 243860), (685, 230332), (890, 177278), (1294, 121930), (1370, 115166), (1780, 88639), (2588, 60965), (2740, 57583), (3235, 48772), (6470, 24386), (12193, 12940)]