890504920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1\times {\mathrm{1811}}^1$

素因数の和:2488

約数の個数: 64

約数和(自身を含む): 2113516800

約数和(自身を除く): 1223011880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 647, 760, 1294, 1811, 2588, 3235, 3622, 5176, 6470, 7244, 9055, 12293, 12940, 14488, 18110, 24586, 25880, 34409, 36220, 49172, 61465, 68818, 72440, 98344, 122930, 137636, 172045, 245860, 275272, 344090, 491720, 688180, 1171717, 1376360, 2343434, 4686868, 5858585, 9373736, 11717170, 22262623, 23434340, 44525246, 46868680, 89050492, 111313115, 178100984, 222626230, 445252460, 890504920]

約数ペア:

[(1, 890504920), (2, 445252460), (4, 222626230), (5, 178100984), (8, 111313115), (10, 89050492), (19, 46868680), (20, 44525246), (38, 23434340), (40, 22262623), (76, 11717170), (95, 9373736), (152, 5858585), (190, 4686868), (380, 2343434), (647, 1376360), (760, 1171717), (1294, 688180), (1811, 491720), (2588, 344090), (3235, 275272), (3622, 245860), (5176, 172045), (6470, 137636), (7244, 122930), (9055, 98344), (12293, 72440), (12940, 68818), (14488, 61465), (18110, 49172), (24586, 36220), (25880, 34409)]