398945375

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:333

約数の個数: 64

約数和(自身を含む): 570810240

約数和(自身を除く): 171864865

約数列:

[1, 5, 17, 19, 25, 41, 85, 95, 125, 205, 241, 323, 425, 475, 697, 779, 1025, 1205, 1615, 2125, 2375, 3485, 3895, 4097, 4579, 5125, 6025, 8075, 9881, 13243, 17425, 19475, 20485, 22895, 30125, 40375, 49405, 66215, 77843, 87125, 97375, 102425, 114475, 167977, 187739, 247025, 331075, 389215, 512125, 572375, 839885, 938695, 1235125, 1655375, 1946075, 3191563, 4199425, 4693475, 9730375, 15957815, 20997125, 23467375, 79789075, 398945375]

約数ペア:

[(1, 398945375), (5, 79789075), (17, 23467375), (19, 20997125), (25, 15957815), (41, 9730375), (85, 4693475), (95, 4199425), (125, 3191563), (205, 1946075), (241, 1655375), (323, 1235125), (425, 938695), (475, 839885), (697, 572375), (779, 512125), (1025, 389215), (1205, 331075), (1615, 247025), (2125, 187739), (2375, 167977), (3485, 114475), (3895, 102425), (4097, 97375), (4579, 87125), (5125, 77843), (6025, 66215), (8075, 49405), (9881, 40375), (13243, 30125), (17425, 22895), (19475, 20485)]