19643650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:715

約数の個数: 48

約数和(自身を含む): 40247424

約数和(自身を除く): 20603774

約数列:

[1, 2, 5, 10, 13, 25, 26, 47, 50, 65, 94, 130, 235, 325, 470, 611, 643, 650, 1175, 1222, 1286, 2350, 3055, 3215, 6110, 6430, 8359, 15275, 16075, 16718, 30221, 30550, 32150, 41795, 60442, 83590, 151105, 208975, 302210, 392873, 417950, 755525, 785746, 1511050, 1964365, 3928730, 9821825, 19643650]

約数ペア:

[(1, 19643650), (2, 9821825), (5, 3928730), (10, 1964365), (13, 1511050), (25, 785746), (26, 755525), (47, 417950), (50, 392873), (65, 302210), (94, 208975), (130, 151105), (235, 83590), (325, 60442), (470, 41795), (611, 32150), (643, 30550), (650, 30221), (1175, 16718), (1222, 16075), (1286, 15275), (2350, 8359), (3055, 6430), (3215, 6110)]