128739100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{353}}^1\times {\mathrm{521}}^1$

素因数の和:895

約数の個数: 72

約数和(自身を含む): 320791968

約数和(自身を除く): 192052868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 353, 521, 700, 706, 1042, 1412, 1765, 2084, 2471, 2605, 3530, 3647, 4942, 5210, 7060, 7294, 8825, 9884, 10420, 12355, 13025, 14588, 17650, 18235, 24710, 26050, 35300, 36470, 49420, 52100, 61775, 72940, 91175, 123550, 182350, 183913, 247100, 364700, 367826, 735652, 919565, 1287391, 1839130, 2574782, 3678260, 4597825, 5149564, 6436955, 9195650, 12873910, 18391300, 25747820, 32184775, 64369550, 128739100]

約数ペア:

[(1, 128739100), (2, 64369550), (4, 32184775), (5, 25747820), (7, 18391300), (10, 12873910), (14, 9195650), (20, 6436955), (25, 5149564), (28, 4597825), (35, 3678260), (50, 2574782), (70, 1839130), (100, 1287391), (140, 919565), (175, 735652), (350, 367826), (353, 364700), (521, 247100), (700, 183913), (706, 182350), (1042, 123550), (1412, 91175), (1765, 72940), (2084, 61775), (2471, 52100), (2605, 49420), (3530, 36470), (3647, 35300), (4942, 26050), (5210, 24710), (7060, 18235), (7294, 17650), (8825, 14588), (9884, 13025), (10420, 12355)]