131518940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{3121}}^1$

素因数の和:3187

約数の個数: 72

約数和(自身を含む): 328858992

約数和(自身を除く): 197340052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 490, 602, 860, 980, 1204, 1505, 2107, 3010, 3121, 4214, 6020, 6242, 8428, 10535, 12484, 15605, 21070, 21847, 31210, 42140, 43694, 62420, 87388, 109235, 134203, 152929, 218470, 268406, 305858, 436940, 536812, 611716, 671015, 764645, 939421, 1342030, 1529290, 1878842, 2684060, 3058580, 3757684, 4697105, 6575947, 9394210, 13151894, 18788420, 26303788, 32879735, 65759470, 131518940]

約数ペア:

[(1, 131518940), (2, 65759470), (4, 32879735), (5, 26303788), (7, 18788420), (10, 13151894), (14, 9394210), (20, 6575947), (28, 4697105), (35, 3757684), (43, 3058580), (49, 2684060), (70, 1878842), (86, 1529290), (98, 1342030), (140, 939421), (172, 764645), (196, 671015), (215, 611716), (245, 536812), (301, 436940), (430, 305858), (490, 268406), (602, 218470), (860, 152929), (980, 134203), (1204, 109235), (1505, 87388), (2107, 62420), (3010, 43694), (3121, 42140), (4214, 31210), (6020, 21847), (6242, 21070), (8428, 15605), (10535, 12484)]