258325640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1\times {\mathrm{331}}^1$

素因数の和:630

約数の個数: 64

約数和(自身を含む): 591624000

約数和(自身を除く): 333298360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 179, 218, 331, 358, 436, 545, 662, 716, 872, 895, 1090, 1324, 1432, 1655, 1790, 2180, 2648, 3310, 3580, 4360, 6620, 7160, 13240, 19511, 36079, 39022, 59249, 72158, 78044, 97555, 118498, 144316, 156088, 180395, 195110, 236996, 288632, 296245, 360790, 390220, 473992, 592490, 721580, 780440, 1184980, 1443160, 2369960, 6458141, 12916282, 25832564, 32290705, 51665128, 64581410, 129162820, 258325640]

約数ペア:

[(1, 258325640), (2, 129162820), (4, 64581410), (5, 51665128), (8, 32290705), (10, 25832564), (20, 12916282), (40, 6458141), (109, 2369960), (179, 1443160), (218, 1184980), (331, 780440), (358, 721580), (436, 592490), (545, 473992), (662, 390220), (716, 360790), (872, 296245), (895, 288632), (1090, 236996), (1324, 195110), (1432, 180395), (1655, 156088), (1790, 144316), (2180, 118498), (2648, 97555), (3310, 78044), (3580, 72158), (4360, 59249), (6620, 39022), (7160, 36079), (13240, 19511)]