18891280

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{10267}}^1$

素因数の和:10303

約数の個数: 40

約数和(自身を含む): 45836352

約数和(自身を除く): 26945072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 10267, 20534, 41068, 51335, 82136, 102670, 164272, 205340, 236141, 410680, 472282, 821360, 944564, 1180705, 1889128, 2361410, 3778256, 4722820, 9445640, 18891280]

約数ペア:

[(1, 18891280), (2, 9445640), (4, 4722820), (5, 3778256), (8, 2361410), (10, 1889128), (16, 1180705), (20, 944564), (23, 821360), (40, 472282), (46, 410680), (80, 236141), (92, 205340), (115, 164272), (184, 102670), (230, 82136), (368, 51335), (460, 41068), (920, 20534), (1840, 10267)]