18259850

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{257}}^1$

素因数の和:312

約数の個数: 72

約数和(自身を含む): 41029740

約数和(自身を除く): 22769890

約数列:

[1, 2, 5, 7, 10, 14, 25, 29, 35, 49, 50, 58, 70, 98, 145, 175, 203, 245, 257, 290, 350, 406, 490, 514, 725, 1015, 1225, 1285, 1421, 1450, 1799, 2030, 2450, 2570, 2842, 3598, 5075, 6425, 7105, 7453, 8995, 10150, 12593, 12850, 14210, 14906, 17990, 25186, 35525, 37265, 44975, 52171, 62965, 71050, 74530, 89950, 104342, 125930, 186325, 260855, 314825, 365197, 372650, 521710, 629650, 730394, 1304275, 1825985, 2608550, 3651970, 9129925, 18259850]

約数ペア:

[(1, 18259850), (2, 9129925), (5, 3651970), (7, 2608550), (10, 1825985), (14, 1304275), (25, 730394), (29, 629650), (35, 521710), (49, 372650), (50, 365197), (58, 314825), (70, 260855), (98, 186325), (145, 125930), (175, 104342), (203, 89950), (245, 74530), (257, 71050), (290, 62965), (350, 52171), (406, 44975), (490, 37265), (514, 35525), (725, 25186), (1015, 17990), (1225, 14906), (1285, 14210), (1421, 12850), (1450, 12593), (1799, 10150), (2030, 8995), (2450, 7453), (2570, 7105), (2842, 6425), (3598, 5075)]