18790278

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:477

約数の個数: 64

約数和(自身を含む): 44083200

約数和(自身を除く): 25292922

約数列:

[1, 2, 3, 6, 13, 19, 26, 31, 38, 39, 57, 62, 78, 93, 114, 186, 247, 403, 409, 494, 589, 741, 806, 818, 1178, 1209, 1227, 1482, 1767, 2418, 2454, 3534, 5317, 7657, 7771, 10634, 12679, 15314, 15542, 15951, 22971, 23313, 25358, 31902, 38037, 45942, 46626, 76074, 101023, 164827, 202046, 240901, 303069, 329654, 481802, 494481, 606138, 722703, 988962, 1445406, 3131713, 6263426, 9395139, 18790278]

約数ペア:

[(1, 18790278), (2, 9395139), (3, 6263426), (6, 3131713), (13, 1445406), (19, 988962), (26, 722703), (31, 606138), (38, 494481), (39, 481802), (57, 329654), (62, 303069), (78, 240901), (93, 202046), (114, 164827), (186, 101023), (247, 76074), (403, 46626), (409, 45942), (494, 38037), (589, 31902), (741, 25358), (806, 23313), (818, 22971), (1178, 15951), (1209, 15542), (1227, 15314), (1482, 12679), (1767, 10634), (2418, 7771), (2454, 7657), (3534, 5317)]