81768304

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:689

約数の個数: 40

約数和(自身を含む): 162216800

約数和(自身を除く): 80448496

約数列:

[1, 2, 4, 8, 16, 61, 122, 199, 244, 398, 421, 488, 796, 842, 976, 1592, 1684, 3184, 3368, 6736, 12139, 24278, 25681, 48556, 51362, 83779, 97112, 102724, 167558, 194224, 205448, 335116, 410896, 670232, 1340464, 5110519, 10221038, 20442076, 40884152, 81768304]

約数ペア:

[(1, 81768304), (2, 40884152), (4, 20442076), (8, 10221038), (16, 5110519), (61, 1340464), (122, 670232), (199, 410896), (244, 335116), (398, 205448), (421, 194224), (488, 167558), (796, 102724), (842, 97112), (976, 83779), (1592, 51362), (1684, 48556), (3184, 25681), (3368, 24278), (6736, 12139)]