320779970

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{397}}^1$

素因数の和:532

約数の個数: 96

約数和(自身を含む): 720325872

約数和(自身を除く): 399545902

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 49, 70, 85, 97, 98, 119, 170, 194, 238, 245, 397, 485, 490, 595, 679, 794, 833, 970, 1190, 1358, 1649, 1666, 1985, 2779, 3298, 3395, 3970, 4165, 4753, 5558, 6749, 6790, 8245, 8330, 9506, 11543, 13498, 13895, 16490, 19453, 23086, 23765, 27790, 33745, 38509, 38906, 47243, 47530, 57715, 67490, 77018, 80801, 94486, 97265, 115430, 161602, 192545, 194530, 236215, 269563, 330701, 385090, 404005, 472430, 539126, 654653, 661402, 808010, 1309306, 1347815, 1653505, 1886941, 2695630, 3273265, 3307010, 3773882, 4582571, 6546530, 9165142, 9434705, 18869410, 22912855, 32077997, 45825710, 64155994, 160389985, 320779970]

約数ペア:

[(1, 320779970), (2, 160389985), (5, 64155994), (7, 45825710), (10, 32077997), (14, 22912855), (17, 18869410), (34, 9434705), (35, 9165142), (49, 6546530), (70, 4582571), (85, 3773882), (97, 3307010), (98, 3273265), (119, 2695630), (170, 1886941), (194, 1653505), (238, 1347815), (245, 1309306), (397, 808010), (485, 661402), (490, 654653), (595, 539126), (679, 472430), (794, 404005), (833, 385090), (970, 330701), (1190, 269563), (1358, 236215), (1649, 194530), (1666, 192545), (1985, 161602), (2779, 115430), (3298, 97265), (3395, 94486), (3970, 80801), (4165, 77018), (4753, 67490), (5558, 57715), (6749, 47530), (6790, 47243), (8245, 38906), (8330, 38509), (9506, 33745), (11543, 27790), (13498, 23765), (13895, 23086), (16490, 19453)]