21432740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{5279}}^1$

素因数の和:5324

約数の個数: 48

約数和(自身を含む): 53222400

約数和(自身を除く): 31789660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 5279, 10558, 21116, 26395, 36953, 52790, 73906, 105580, 147812, 153091, 184765, 306182, 369530, 612364, 739060, 765455, 1071637, 1530910, 2143274, 3061820, 4286548, 5358185, 10716370, 21432740]

約数ペア:

[(1, 21432740), (2, 10716370), (4, 5358185), (5, 4286548), (7, 3061820), (10, 2143274), (14, 1530910), (20, 1071637), (28, 765455), (29, 739060), (35, 612364), (58, 369530), (70, 306182), (116, 184765), (140, 153091), (145, 147812), (203, 105580), (290, 73906), (406, 52790), (580, 36953), (812, 26395), (1015, 21116), (2030, 10558), (4060, 5279)]