16321720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{157}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 38905920

約数和(自身を除く): 22584200

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 113, 115, 157, 184, 226, 230, 314, 452, 460, 565, 628, 785, 904, 920, 1130, 1256, 1570, 2260, 2599, 3140, 3611, 4520, 5198, 6280, 7222, 10396, 12995, 14444, 17741, 18055, 20792, 25990, 28888, 35482, 36110, 51980, 70964, 72220, 88705, 103960, 141928, 144440, 177410, 354820, 408043, 709640, 816086, 1632172, 2040215, 3264344, 4080430, 8160860, 16321720]

約数ペア:

[(1, 16321720), (2, 8160860), (4, 4080430), (5, 3264344), (8, 2040215), (10, 1632172), (20, 816086), (23, 709640), (40, 408043), (46, 354820), (92, 177410), (113, 144440), (115, 141928), (157, 103960), (184, 88705), (226, 72220), (230, 70964), (314, 51980), (452, 36110), (460, 35482), (565, 28888), (628, 25990), (785, 20792), (904, 18055), (920, 17741), (1130, 14444), (1256, 12995), (1570, 10396), (2260, 7222), (2599, 6280), (3140, 5198), (3611, 4520)]