2989420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 7273728

約数和(自身を除く): 4284308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 163, 262, 326, 524, 652, 655, 815, 917, 1141, 1310, 1630, 1834, 2282, 2620, 3260, 3668, 4564, 4585, 5705, 9170, 11410, 18340, 21353, 22820, 42706, 85412, 106765, 149471, 213530, 298942, 427060, 597884, 747355, 1494710, 2989420]

約数ペア:

[(1, 2989420), (2, 1494710), (4, 747355), (5, 597884), (7, 427060), (10, 298942), (14, 213530), (20, 149471), (28, 106765), (35, 85412), (70, 42706), (131, 22820), (140, 21353), (163, 18340), (262, 11410), (326, 9170), (524, 5705), (652, 4585), (655, 4564), (815, 3668), (917, 3260), (1141, 2620), (1310, 2282), (1630, 1834)]