20105729540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{116989}}^1$

素因数の和:117672

約数の個数: 48

約数和(自身を含む): 45539059440

約数和(自身を除く): 25433329900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 661, 1322, 2644, 3305, 6610, 8593, 13220, 17186, 34372, 42965, 85930, 116989, 171860, 233978, 467956, 584945, 1169890, 1520857, 2339780, 3041714, 6083428, 7604285, 15208570, 30417140, 77329729, 154659458, 309318916, 386648645, 773297290, 1005286477, 1546594580, 2010572954, 4021145908, 5026432385, 10052864770, 20105729540]

約数ペア:

[(1, 20105729540), (2, 10052864770), (4, 5026432385), (5, 4021145908), (10, 2010572954), (13, 1546594580), (20, 1005286477), (26, 773297290), (52, 386648645), (65, 309318916), (130, 154659458), (260, 77329729), (661, 30417140), (1322, 15208570), (2644, 7604285), (3305, 6083428), (6610, 3041714), (8593, 2339780), (13220, 1520857), (17186, 1169890), (34372, 584945), (42965, 467956), (85930, 233978), (116989, 171860)]