18969040

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3539}}^1$

素因数の和:3619

約数の個数: 40

約数和(自身を含む): 44773920

約数和(自身を除く): 25804880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3539, 5360, 7078, 14156, 17695, 28312, 35390, 56624, 70780, 141560, 237113, 283120, 474226, 948452, 1185565, 1896904, 2371130, 3793808, 4742260, 9484520, 18969040]

約数ペア:

[(1, 18969040), (2, 9484520), (4, 4742260), (5, 3793808), (8, 2371130), (10, 1896904), (16, 1185565), (20, 948452), (40, 474226), (67, 283120), (80, 237113), (134, 141560), (268, 70780), (335, 56624), (536, 35390), (670, 28312), (1072, 17695), (1340, 14156), (2680, 7078), (3539, 5360)]