18130028

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{643}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 38949120

約数和(自身を除く): 20819092

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 53, 76, 106, 133, 212, 266, 371, 532, 643, 742, 1007, 1286, 1484, 2014, 2572, 4028, 4501, 7049, 9002, 12217, 14098, 18004, 24434, 28196, 34079, 48868, 68158, 85519, 136316, 171038, 238553, 342076, 477106, 647501, 954212, 1295002, 2590004, 4532507, 9065014, 18130028]

約数ペア:

[(1, 18130028), (2, 9065014), (4, 4532507), (7, 2590004), (14, 1295002), (19, 954212), (28, 647501), (38, 477106), (53, 342076), (76, 238553), (106, 171038), (133, 136316), (212, 85519), (266, 68158), (371, 48868), (532, 34079), (643, 28196), (742, 24434), (1007, 18004), (1286, 14098), (1484, 12217), (2014, 9002), (2572, 7049), (4028, 4501)]