21977205

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1307}}^1$

素因数の和:1393

約数の個数: 32

約数和(自身を含む): 37670400

約数和(自身を除く): 15693195

約数列:

[1, 3, 5, 15, 19, 57, 59, 95, 177, 285, 295, 885, 1121, 1307, 3363, 3921, 5605, 6535, 16815, 19605, 24833, 74499, 77113, 124165, 231339, 372495, 385565, 1156695, 1465147, 4395441, 7325735, 21977205]

約数ペア:

[(1, 21977205), (3, 7325735), (5, 4395441), (15, 1465147), (19, 1156695), (57, 385565), (59, 372495), (95, 231339), (177, 124165), (285, 77113), (295, 74499), (885, 24833), (1121, 19605), (1307, 16815), (3363, 6535), (3921, 5605)]