211679420

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1\times {\mathrm{487}}^1$

素因数の和:810

約数の個数: 48

約数和(自身を含む): 451895808

約数和(自身を除く): 240216388

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 211, 412, 422, 487, 515, 844, 974, 1030, 1055, 1948, 2060, 2110, 2435, 4220, 4870, 9740, 21733, 43466, 50161, 86932, 100322, 102757, 108665, 200644, 205514, 217330, 250805, 411028, 434660, 501610, 513785, 1003220, 1027570, 2055140, 10583971, 21167942, 42335884, 52919855, 105839710, 211679420]

約数ペア:

[(1, 211679420), (2, 105839710), (4, 52919855), (5, 42335884), (10, 21167942), (20, 10583971), (103, 2055140), (206, 1027570), (211, 1003220), (412, 513785), (422, 501610), (487, 434660), (515, 411028), (844, 250805), (974, 217330), (1030, 205514), (1055, 200644), (1948, 108665), (2060, 102757), (2110, 100322), (2435, 86932), (4220, 50161), (4870, 43466), (9740, 21733)]