256820512

素因数分解:

$2^5\times {\mathrm{13}}^4\times {\mathrm{281}}^1$

素因数の和:343

約数の個数: 60

約数和(自身を含む): 549697806

約数和(自身を除く): 292877294

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 281, 338, 416, 562, 676, 1124, 1352, 2197, 2248, 2704, 3653, 4394, 4496, 5408, 7306, 8788, 8992, 14612, 17576, 28561, 29224, 35152, 47489, 57122, 58448, 70304, 94978, 114244, 116896, 189956, 228488, 379912, 456976, 617357, 759824, 913952, 1234714, 1519648, 2469428, 4938856, 8025641, 9877712, 16051282, 19755424, 32102564, 64205128, 128410256, 256820512]

約数ペア:

[(1, 256820512), (2, 128410256), (4, 64205128), (8, 32102564), (13, 19755424), (16, 16051282), (26, 9877712), (32, 8025641), (52, 4938856), (104, 2469428), (169, 1519648), (208, 1234714), (281, 913952), (338, 759824), (416, 617357), (562, 456976), (676, 379912), (1124, 228488), (1352, 189956), (2197, 116896), (2248, 114244), (2704, 94978), (3653, 70304), (4394, 58448), (4496, 57122), (5408, 47489), (7306, 35152), (8788, 29224), (8992, 28561), (14612, 17576)]