21437030

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{277}}^1$

素因数の和:464

約数の個数: 32

約数和(自身を含む): 39631680

約数和(自身を除く): 18194650

約数列:

[1, 2, 5, 10, 71, 109, 142, 218, 277, 355, 545, 554, 710, 1090, 1385, 2770, 7739, 15478, 19667, 30193, 38695, 39334, 60386, 77390, 98335, 150965, 196670, 301930, 2143703, 4287406, 10718515, 21437030]

約数ペア:

[(1, 21437030), (2, 10718515), (5, 4287406), (10, 2143703), (71, 301930), (109, 196670), (142, 150965), (218, 98335), (277, 77390), (355, 60386), (545, 39334), (554, 38695), (710, 30193), (1090, 19667), (1385, 15478), (2770, 7739)]