638596280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73571}}^1$

素因数の和:73620

約数の個数: 64

約数和(自身を含む): 1695098880

約数和(自身を除く): 1056502600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 73571, 147142, 294284, 367855, 514997, 588568, 735710, 1029994, 1471420, 2059988, 2280701, 2574985, 2942840, 4119976, 4561402, 5149970, 9122804, 10299940, 11403505, 15964907, 18245608, 20599880, 22807010, 31929814, 45614020, 63859628, 79824535, 91228040, 127719256, 159649070, 319298140, 638596280]

約数ペア:

[(1, 638596280), (2, 319298140), (4, 159649070), (5, 127719256), (7, 91228040), (8, 79824535), (10, 63859628), (14, 45614020), (20, 31929814), (28, 22807010), (31, 20599880), (35, 18245608), (40, 15964907), (56, 11403505), (62, 10299940), (70, 9122804), (124, 5149970), (140, 4561402), (155, 4119976), (217, 2942840), (248, 2574985), (280, 2280701), (310, 2059988), (434, 1471420), (620, 1029994), (868, 735710), (1085, 588568), (1240, 514997), (1736, 367855), (2170, 294284), (4340, 147142), (8680, 73571)]