290788420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{4127}}^1$

素因数の和:4420

約数の個数: 48

約数和(自身を含む): 660215808

約数和(自身を除く): 369427388

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 271, 542, 1084, 1355, 2710, 3523, 4127, 5420, 7046, 8254, 14092, 16508, 17615, 20635, 35230, 41270, 53651, 70460, 82540, 107302, 214604, 268255, 536510, 1073020, 1118417, 2236834, 4473668, 5592085, 11184170, 14539421, 22368340, 29078842, 58157684, 72697105, 145394210, 290788420]

約数ペア:

[(1, 290788420), (2, 145394210), (4, 72697105), (5, 58157684), (10, 29078842), (13, 22368340), (20, 14539421), (26, 11184170), (52, 5592085), (65, 4473668), (130, 2236834), (260, 1118417), (271, 1073020), (542, 536510), (1084, 268255), (1355, 214604), (2710, 107302), (3523, 82540), (4127, 70460), (5420, 53651), (7046, 41270), (8254, 35230), (14092, 20635), (16508, 17615)]