19929040

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{10831}}^1$

素因数の和:10867

約数の個数: 40

約数和(自身を含む): 48354048

約数和(自身を除く): 28425008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 10831, 21662, 43324, 54155, 86648, 108310, 173296, 216620, 249113, 433240, 498226, 866480, 996452, 1245565, 1992904, 2491130, 3985808, 4982260, 9964520, 19929040]

約数ペア:

[(1, 19929040), (2, 9964520), (4, 4982260), (5, 3985808), (8, 2491130), (10, 1992904), (16, 1245565), (20, 996452), (23, 866480), (40, 498226), (46, 433240), (80, 249113), (92, 216620), (115, 173296), (184, 108310), (230, 86648), (368, 54155), (460, 43324), (920, 21662), (1840, 10831)]