128274356

素因数分解:

$2^2\times 7^2\times {\mathrm{641}}^1\times {\mathrm{1021}}^1$

素因数の和:1680

約数の個数: 36

約数和(自身を含む): 261793476

約数和(自身を除く): 133519120

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 641, 1021, 1282, 2042, 2564, 4084, 4487, 7147, 8974, 14294, 17948, 28588, 31409, 50029, 62818, 100058, 125636, 200116, 654461, 1308922, 2617844, 4581227, 9162454, 18324908, 32068589, 64137178, 128274356]

約数ペア:

[(1, 128274356), (2, 64137178), (4, 32068589), (7, 18324908), (14, 9162454), (28, 4581227), (49, 2617844), (98, 1308922), (196, 654461), (641, 200116), (1021, 125636), (1282, 100058), (2042, 62818), (2564, 50029), (4084, 31409), (4487, 28588), (7147, 17948), (8974, 14294)]