647497630

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:541

約数の個数: 64

約数和(自身を含む): 1277736768

約数和(自身を除く): 630239138

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 131, 193, 197, 262, 386, 394, 655, 965, 985, 1310, 1703, 1930, 1970, 2509, 2561, 3406, 5018, 5122, 8515, 12545, 12805, 17030, 25090, 25283, 25610, 25807, 38021, 50566, 51614, 76042, 126415, 129035, 190105, 252830, 258070, 328679, 335491, 380210, 494273, 657358, 670982, 988546, 1643395, 1677455, 2471365, 3286790, 3354910, 4942730, 4980751, 9961502, 24903755, 49807510, 64749763, 129499526, 323748815, 647497630]

約数ペア:

[(1, 647497630), (2, 323748815), (5, 129499526), (10, 64749763), (13, 49807510), (26, 24903755), (65, 9961502), (130, 4980751), (131, 4942730), (193, 3354910), (197, 3286790), (262, 2471365), (386, 1677455), (394, 1643395), (655, 988546), (965, 670982), (985, 657358), (1310, 494273), (1703, 380210), (1930, 335491), (1970, 328679), (2509, 258070), (2561, 252830), (3406, 190105), (5018, 129035), (5122, 126415), (8515, 76042), (12545, 51614), (12805, 50566), (17030, 38021), (25090, 25807), (25283, 25610)]