28209040

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15331}}^1$

素因数の和:15367

約数の個数: 40

約数和(自身を含む): 68442048

約数和(自身を除く): 40233008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 15331, 30662, 61324, 76655, 122648, 153310, 245296, 306620, 352613, 613240, 705226, 1226480, 1410452, 1763065, 2820904, 3526130, 5641808, 7052260, 14104520, 28209040]

約数ペア:

[(1, 28209040), (2, 14104520), (4, 7052260), (5, 5641808), (8, 3526130), (10, 2820904), (16, 1763065), (20, 1410452), (23, 1226480), (40, 705226), (46, 613240), (80, 352613), (92, 306620), (115, 245296), (184, 153310), (230, 122648), (368, 76655), (460, 61324), (920, 30662), (1840, 15331)]