28723640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{673}}^1$

素因数の和:792

約数の個数: 64

約数和(自身を含む): 71336160

約数和(自身を除く): 42612520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 97, 110, 194, 220, 388, 440, 485, 673, 776, 970, 1067, 1346, 1940, 2134, 2692, 3365, 3880, 4268, 5335, 5384, 6730, 7403, 8536, 10670, 13460, 14806, 21340, 26920, 29612, 37015, 42680, 59224, 65281, 74030, 130562, 148060, 261124, 296120, 326405, 522248, 652810, 718091, 1305620, 1436182, 2611240, 2872364, 3590455, 5744728, 7180910, 14361820, 28723640]

約数ペア:

[(1, 28723640), (2, 14361820), (4, 7180910), (5, 5744728), (8, 3590455), (10, 2872364), (11, 2611240), (20, 1436182), (22, 1305620), (40, 718091), (44, 652810), (55, 522248), (88, 326405), (97, 296120), (110, 261124), (194, 148060), (220, 130562), (388, 74030), (440, 65281), (485, 59224), (673, 42680), (776, 37015), (970, 29612), (1067, 26920), (1346, 21340), (1940, 14806), (2134, 13460), (2692, 10670), (3365, 8536), (3880, 7403), (4268, 6730), (5335, 5384)]