21263190

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54521}}^1$

素因数の和:54544

約数の個数: 32

約数和(自身を含む): 54958176

約数和(自身を除く): 33694986

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54521, 109042, 163563, 272605, 327126, 545210, 708773, 817815, 1417546, 1635630, 2126319, 3543865, 4252638, 7087730, 10631595, 21263190]

約数ペア:

[(1, 21263190), (2, 10631595), (3, 7087730), (5, 4252638), (6, 3543865), (10, 2126319), (13, 1635630), (15, 1417546), (26, 817815), (30, 708773), (39, 545210), (65, 327126), (78, 272605), (130, 163563), (195, 109042), (390, 54521)]