20891646

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:481

約数の個数: 48

約数和(自身を含む): 47005920

約数和(自身を除く): 26114274

約数列:

[1, 2, 3, 6, 9, 18, 53, 61, 106, 122, 159, 183, 318, 359, 366, 477, 549, 718, 954, 1077, 1098, 2154, 3231, 3233, 6462, 6466, 9699, 19027, 19398, 21899, 29097, 38054, 43798, 57081, 58194, 65697, 114162, 131394, 171243, 197091, 342486, 394182, 1160647, 2321294, 3481941, 6963882, 10445823, 20891646]

約数ペア:

[(1, 20891646), (2, 10445823), (3, 6963882), (6, 3481941), (9, 2321294), (18, 1160647), (53, 394182), (61, 342486), (106, 197091), (122, 171243), (159, 131394), (183, 114162), (318, 65697), (359, 58194), (366, 57081), (477, 43798), (549, 38054), (718, 29097), (954, 21899), (1077, 19398), (1098, 19027), (2154, 9699), (3231, 6466), (3233, 6462)]