21006401330

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1\times {\mathrm{170881}}^1$

素因数の和:171554

約数の個数: 32

約数和(自身を含む): 39863352960

約数和(自身を除く): 18856951630

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 647, 1294, 3235, 6470, 12293, 24586, 61465, 122930, 170881, 341762, 854405, 1708810, 3246739, 6493478, 16233695, 32467390, 110560007, 221120014, 552800035, 1105600070, 2100640133, 4201280266, 10503200665, 21006401330]

約数ペア:

[(1, 21006401330), (2, 10503200665), (5, 4201280266), (10, 2100640133), (19, 1105600070), (38, 552800035), (95, 221120014), (190, 110560007), (647, 32467390), (1294, 16233695), (3235, 6493478), (6470, 3246739), (12293, 1708810), (24586, 854405), (61465, 341762), (122930, 170881)]