18888968540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{522661}}^1$

素因数の和:522822

約数の個数: 48

約数和(自身を含む): 43025535840

約数和(自身を除く): 24136567300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 556, 695, 1390, 1807, 2780, 3614, 7228, 9035, 18070, 36140, 522661, 1045322, 2090644, 2613305, 5226610, 6794593, 10453220, 13589186, 27178372, 33972965, 67945930, 72649879, 135891860, 145299758, 290599516, 363249395, 726498790, 944448427, 1452997580, 1888896854, 3777793708, 4722242135, 9444484270, 18888968540]

約数ペア:

[(1, 18888968540), (2, 9444484270), (4, 4722242135), (5, 3777793708), (10, 1888896854), (13, 1452997580), (20, 944448427), (26, 726498790), (52, 363249395), (65, 290599516), (130, 145299758), (139, 135891860), (260, 72649879), (278, 67945930), (556, 33972965), (695, 27178372), (1390, 13589186), (1807, 10453220), (2780, 6794593), (3614, 5226610), (7228, 2613305), (9035, 2090644), (18070, 1045322), (36140, 522661)]