20108223

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:520

約数の個数: 32

約数和(自身を含む): 31396800

約数和(自身を除く): 11288577

約数列:

[1, 3, 9, 27, 29, 61, 87, 183, 261, 421, 549, 783, 1263, 1647, 1769, 3789, 5307, 11367, 12209, 15921, 25681, 36627, 47763, 77043, 109881, 231129, 329643, 693387, 744749, 2234247, 6702741, 20108223]

約数ペア:

[(1, 20108223), (3, 6702741), (9, 2234247), (27, 744749), (29, 693387), (61, 329643), (87, 231129), (183, 109881), (261, 77043), (421, 47763), (549, 36627), (783, 25681), (1263, 15921), (1647, 12209), (1769, 11367), (3789, 5307)]