401972350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{19949}}^1$

素因数の和:20005

約数の個数: 48

約数和(自身を含む): 831196800

約数和(自身を除く): 429224450

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1550, 2015, 4030, 10075, 19949, 20150, 39898, 99745, 199490, 259337, 498725, 518674, 618419, 997450, 1236838, 1296685, 2593370, 3092095, 6184190, 6483425, 8039447, 12966850, 15460475, 16078894, 30920950, 40197235, 80394470, 200986175, 401972350]

約数ペア:

[(1, 401972350), (2, 200986175), (5, 80394470), (10, 40197235), (13, 30920950), (25, 16078894), (26, 15460475), (31, 12966850), (50, 8039447), (62, 6483425), (65, 6184190), (130, 3092095), (155, 2593370), (310, 1296685), (325, 1236838), (403, 997450), (650, 618419), (775, 518674), (806, 498725), (1550, 259337), (2015, 199490), (4030, 99745), (10075, 39898), (19949, 20150)]