28209380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1\times {\mathrm{263}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 61737984

約数和(自身を除く): 33528604

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 173, 263, 310, 346, 526, 620, 692, 865, 1052, 1315, 1730, 2630, 3460, 5260, 5363, 8153, 10726, 16306, 21452, 26815, 32612, 40765, 45499, 53630, 81530, 90998, 107260, 163060, 181996, 227495, 454990, 909980, 1410469, 2820938, 5641876, 7052345, 14104690, 28209380]

約数ペア:

[(1, 28209380), (2, 14104690), (4, 7052345), (5, 5641876), (10, 2820938), (20, 1410469), (31, 909980), (62, 454990), (124, 227495), (155, 181996), (173, 163060), (263, 107260), (310, 90998), (346, 81530), (526, 53630), (620, 45499), (692, 40765), (865, 32612), (1052, 26815), (1315, 21452), (1730, 16306), (2630, 10726), (3460, 8153), (5260, 5363)]