20984528

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{431}}^1$

素因数の和:635

約数の個数: 40

約数和(自身を含む): 43390080

約数和(自身を除く): 22405552

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 179, 272, 358, 431, 716, 862, 1432, 1724, 2864, 3043, 3448, 6086, 6896, 7327, 12172, 14654, 24344, 29308, 48688, 58616, 77149, 117232, 154298, 308596, 617192, 1234384, 1311533, 2623066, 5246132, 10492264, 20984528]

約数ペア:

[(1, 20984528), (2, 10492264), (4, 5246132), (8, 2623066), (16, 1311533), (17, 1234384), (34, 617192), (68, 308596), (136, 154298), (179, 117232), (272, 77149), (358, 58616), (431, 48688), (716, 29308), (862, 24344), (1432, 14654), (1724, 12172), (2864, 7327), (3043, 6896), (3448, 6086)]