261391780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43711}}^1$

素因数の和:43756

約数の個数: 48

約数和(自身を含む): 616863744

約数和(自身を除く): 355471964

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 5980, 43711, 87422, 174844, 218555, 437110, 568243, 874220, 1005353, 1136486, 2010706, 2272972, 2841215, 4021412, 5026765, 5682430, 10053530, 11364860, 13069589, 20107060, 26139178, 52278356, 65347945, 130695890, 261391780]

約数ペア:

[(1, 261391780), (2, 130695890), (4, 65347945), (5, 52278356), (10, 26139178), (13, 20107060), (20, 13069589), (23, 11364860), (26, 10053530), (46, 5682430), (52, 5026765), (65, 4021412), (92, 2841215), (115, 2272972), (130, 2010706), (230, 1136486), (260, 1005353), (299, 874220), (460, 568243), (598, 437110), (1196, 218555), (1495, 174844), (2990, 87422), (5980, 43711)]