664447280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{373}}^1\times {\mathrm{3181}}^1$

素因数の和:3574

約数の個数: 80

約数和(自身を含む): 1770821184

約数和(自身を除く): 1106373904

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 373, 560, 746, 1492, 1865, 2611, 2984, 3181, 3730, 5222, 5968, 6362, 7460, 10444, 12724, 13055, 14920, 15905, 20888, 22267, 25448, 26110, 29840, 31810, 41776, 44534, 50896, 52220, 63620, 89068, 104440, 111335, 127240, 178136, 208880, 222670, 254480, 356272, 445340, 890680, 1186513, 1781360, 2373026, 4746052, 5932565, 8305591, 9492104, 11865130, 16611182, 18984208, 23730260, 33222364, 41527955, 47460520, 66444728, 83055910, 94921040, 132889456, 166111820, 332223640, 664447280]

約数ペア:

[(1, 664447280), (2, 332223640), (4, 166111820), (5, 132889456), (7, 94921040), (8, 83055910), (10, 66444728), (14, 47460520), (16, 41527955), (20, 33222364), (28, 23730260), (35, 18984208), (40, 16611182), (56, 11865130), (70, 9492104), (80, 8305591), (112, 5932565), (140, 4746052), (280, 2373026), (373, 1781360), (560, 1186513), (746, 890680), (1492, 445340), (1865, 356272), (2611, 254480), (2984, 222670), (3181, 208880), (3730, 178136), (5222, 127240), (5968, 111335), (6362, 104440), (7460, 89068), (10444, 63620), (12724, 52220), (13055, 50896), (14920, 44534), (15905, 41776), (20888, 31810), (22267, 29840), (25448, 26110)]