18900752

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1131

約数の個数: 40

約数和(自身を含む): 39919320

約数和(自身を除く): 21018568

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 89, 104, 178, 208, 356, 712, 1021, 1157, 1424, 2042, 2314, 4084, 4628, 8168, 9256, 13273, 16336, 18512, 26546, 53092, 90869, 106184, 181738, 212368, 363476, 726952, 1181297, 1453904, 2362594, 4725188, 9450376, 18900752]

約数ペア:

[(1, 18900752), (2, 9450376), (4, 4725188), (8, 2362594), (13, 1453904), (16, 1181297), (26, 726952), (52, 363476), (89, 212368), (104, 181738), (178, 106184), (208, 90869), (356, 53092), (712, 26546), (1021, 18512), (1157, 16336), (1424, 13273), (2042, 9256), (2314, 8168), (4084, 4628)]