640964340

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{395657}}^1$

素因数の和:395678

約数の個数: 60

約数和(自身を含む): 2010733956

約数和(自身を除く): 1369769616

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 395657, 791314, 1186971, 1582628, 1978285, 2373942, 3560913, 3956570, 4747884, 5934855, 7121826, 7913140, 10682739, 11869710, 14243652, 17804565, 21365478, 23739420, 32048217, 35609130, 42730956, 53413695, 64096434, 71218260, 106827390, 128192868, 160241085, 213654780, 320482170, 640964340]

約数ペア:

[(1, 640964340), (2, 320482170), (3, 213654780), (4, 160241085), (5, 128192868), (6, 106827390), (9, 71218260), (10, 64096434), (12, 53413695), (15, 42730956), (18, 35609130), (20, 32048217), (27, 23739420), (30, 21365478), (36, 17804565), (45, 14243652), (54, 11869710), (60, 10682739), (81, 7913140), (90, 7121826), (108, 5934855), (135, 4747884), (162, 3956570), (180, 3560913), (270, 2373942), (324, 1978285), (405, 1582628), (540, 1186971), (810, 791314), (1620, 395657)]