189957405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{281}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 353776896

約数和(自身を除く): 163819491

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 241, 255, 281, 561, 723, 843, 935, 1205, 1405, 2651, 2805, 3091, 3615, 4097, 4215, 4777, 7953, 9273, 12291, 13255, 14331, 15455, 20485, 23885, 39765, 45067, 46365, 52547, 61455, 67721, 71655, 135201, 157641, 203163, 225335, 262735, 338605, 676005, 744931, 788205, 1015815, 1151257, 2234793, 3453771, 3724655, 5756285, 11173965, 12663827, 17268855, 37991481, 63319135, 189957405]

約数ペア:

[(1, 189957405), (3, 63319135), (5, 37991481), (11, 17268855), (15, 12663827), (17, 11173965), (33, 5756285), (51, 3724655), (55, 3453771), (85, 2234793), (165, 1151257), (187, 1015815), (241, 788205), (255, 744931), (281, 676005), (561, 338605), (723, 262735), (843, 225335), (935, 203163), (1205, 157641), (1405, 135201), (2651, 71655), (2805, 67721), (3091, 61455), (3615, 52547), (4097, 46365), (4215, 45067), (4777, 39765), (7953, 23885), (9273, 20485), (12291, 15455), (13255, 14331)]