28781718

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{223}}^1\times {\mathrm{439}}^1$

素因数の和:681

約数の個数: 48

約数和(自身を含む): 67415040

約数和(自身を除く): 38633322

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 223, 294, 439, 446, 669, 878, 1317, 1338, 1561, 2634, 3073, 3122, 4683, 6146, 9219, 9366, 10927, 18438, 21511, 21854, 32781, 43022, 64533, 65562, 97897, 129066, 195794, 293691, 587382, 685279, 1370558, 2055837, 4111674, 4796953, 9593906, 14390859, 28781718]

約数ペア:

[(1, 28781718), (2, 14390859), (3, 9593906), (6, 4796953), (7, 4111674), (14, 2055837), (21, 1370558), (42, 685279), (49, 587382), (98, 293691), (147, 195794), (223, 129066), (294, 97897), (439, 65562), (446, 64533), (669, 43022), (878, 32781), (1317, 21854), (1338, 21511), (1561, 18438), (2634, 10927), (3073, 9366), (3122, 9219), (4683, 6146)]