21000598840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2711}}^1\times {\mathrm{14897}}^1$

素因数の和:17632

約数の個数: 64

約数和(自身を含む): 50908253760

約数和(自身を除く): 29907654920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 2711, 5422, 10844, 13555, 14897, 21688, 27110, 29794, 35243, 54220, 59588, 70486, 74485, 108440, 119176, 140972, 148970, 176215, 193661, 281944, 297940, 352430, 387322, 595880, 704860, 774644, 968305, 1409720, 1549288, 1936610, 3873220, 7746440, 40385767, 80771534, 161543068, 201928835, 323086136, 403857670, 525014971, 807715340, 1050029942, 1615430680, 2100059884, 2625074855, 4200119768, 5250149710, 10500299420, 21000598840]

約数ペア:

[(1, 21000598840), (2, 10500299420), (4, 5250149710), (5, 4200119768), (8, 2625074855), (10, 2100059884), (13, 1615430680), (20, 1050029942), (26, 807715340), (40, 525014971), (52, 403857670), (65, 323086136), (104, 201928835), (130, 161543068), (260, 80771534), (520, 40385767), (2711, 7746440), (5422, 3873220), (10844, 1936610), (13555, 1549288), (14897, 1409720), (21688, 968305), (27110, 774644), (29794, 704860), (35243, 595880), (54220, 387322), (59588, 352430), (70486, 297940), (74485, 281944), (108440, 193661), (119176, 176215), (140972, 148970)]