20123811280

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1920211}}^1$

素因数の和:1920355

約数の個数: 40

約数和(自身を含む): 47145045024

約数和(自身を除く): 27021233744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 5240, 10480, 1920211, 3840422, 7680844, 9601055, 15361688, 19202110, 30723376, 38404220, 76808440, 153616880, 251547641, 503095282, 1006190564, 1257738205, 2012381128, 2515476410, 4024762256, 5030952820, 10061905640, 20123811280]

約数ペア:

[(1, 20123811280), (2, 10061905640), (4, 5030952820), (5, 4024762256), (8, 2515476410), (10, 2012381128), (16, 1257738205), (20, 1006190564), (40, 503095282), (80, 251547641), (131, 153616880), (262, 76808440), (524, 38404220), (655, 30723376), (1048, 19202110), (1310, 15361688), (2096, 9601055), (2620, 7680844), (5240, 3840422), (10480, 1920211)]